Alternatives to Hume Audio Decisions API
Compare Hume Audio Decisions API alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to Hume Audio Decisions API in 2026. Compare features, ratings, user reviews, pricing, and more from Hume Audio Decisions API competitors and alternatives in order to make an informed decision for your business.
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Higgs Audio / Avatar
Boson AI
Higgs Audio / Avatar is a family of foundation audio and avatar models designed to generate natural speech, understand tone, emotion, and intent, and give voice interactions a visual presence. The models support text-to-speech, speech-to-text, avatar generation, and automatic voice casting that selects an appropriate voice based on context, sentiment, and content. Built for real-world production, Higgs combines expressive generation, robust speech understanding, and flexible deployment for workloads where quality, latency, and reliability matter. High-accuracy multilingual speech recognition supports major languages, while voice cloning reproduces a speaker’s tone from short reference samples to maintain consistent brand voices across interactions. Sentiment detection reads emotional signals in speech to enable smarter routing, stronger analytics, and more context-aware agent behavior. -
2
AnyToSpeech
AnyToSpeech
AnyToSpeech is a text-to-speech online platform built to convert any text into audio instantly, creating audiobooks, MP3 files, podcasts, and voiceovers effortlessly. It turns plain text, documents, PDFs, DOCX, TXT files, webpages, PowerPoint presentations, images, and more into natural-sounding audio with multiple AI voices, accents, tones, and vibes. Users can quickly turn any text into a human-like voice through a simple interface, choose from hundreds of different voice and vibe combinations, and download the result as an MP3 file or listen directly in the browser. AnyToSpeech also includes PDF to MP3 for transforming documents, books, and research papers into audio content; URL to Speech for listening to articles and blogs on the go; Image to Speech for extracting text from signs, documents, screenshots, and images; and Image Translation for extracting text from images, translating it to 30+ languages, and converting the translation to speech.Starting Price: $7 per month -
3
Boson AI
Boson AI
Boson AI provides voice agents powered by foundation audio models, built to run in business workflows and learn from every call. Higgs Realtime enables live voice agents for support lines, sales calls, and product assistants that listen, reason, call tools, and respond in real time with low latency and natural speech-to-speech interaction. Higgs Audio and Avatar extend these capabilities with text-to-speech, speech-to-text, voice cloning, sentiment detection, and avatar generation, producing natural speech while understanding tone, emotion, and intent. The models support high-accuracy multilingual speech recognition, real-time translation, and expressive voice generation, while sentiment signals can improve routing, analytics, and context-aware agent behavior. Designed for real-world production, the platform emphasizes quality, latency, reliability, and flexible deployment across managed and self-serve environments. -
4
CosyVoice
Alibaba
CosyVoice is Qwen Cloud’s voice cloning and speech synthesis model in the CosyVoice series, designed for professional text-to-speech scenarios with improved sound quality, naturalness, expressiveness, and cloning fidelity. With a short reference recording, it can create a highly similar custom voice without model training; Qwen recommends 10–20 seconds of clear speech, while at least five seconds of continuous speech is required. The model supports real-time, streaming text-to-speech synthesis, allowing applications to accept text and return audio with low first-packet latency. It supports Chinese, English, French, German, Japanese, Korean, and Russian for cloned voices, with language hints available to improve identification during enrollment. Source recordings can use WAV, MP3, or M4A formats and should contain clean speech without background music, noise, or additional speakers.Starting Price: $0.26 per 10,000 characters -
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Gemini 2.5 Pro TTS
Google
Gemini 2.5 Pro TTS is Google’s advanced text-to-speech model in the Gemini 2.5 family, optimized for high-quality, expressive, controllable speech synthesis for structured and professional audio generation tasks. The model delivers natural-sounding voice output with enhanced expressivity, tone control, pacing, and pronunciation fidelity, enabling developers to dictate style, accent, rhythm, and emotional nuance through text-based prompts, making it suitable for applications like podcasts, audiobooks, customer assistance, tutorials, and multimedia narration that require premium audio output. It supports both single-speaker and multi-speaker audio, allowing distinct voices and conversational flows in the same output, and can synthesize speech across multiple languages with consistent style adherence. Compared with lower-latency variants like Flash TTS, the Pro TTS model prioritizes sound quality, depth of expression, and nuanced control. -
6
Clef
Cloudflare
Clef is a 27B multimodal decision model that turns a state and a schema of typed questions into structured decisions. It can read state information as text, JSON, images, or video and return a probability for every allowed option of every question. The model supports a 65,536-token context window and vision inputs, allowing developers to evaluate both structured application data and visual content in the same decision workflow. Clef supports three typed question formats: noul for estimating the probability that a proposition is true, choice for selecting among predefined options and returning per-option probabilities, and score for evaluating an input against ordered criteria and producing a probability-weighted score. Applications can submit between 1 and 64 questions in a single request, with answers returned under the same question IDs. -
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Gemini 2.5 Flash TTS
Google
Gemini 2.5 Flash TTS is the latest text-to-speech (TTS) model variant in Google’s Gemini 2.5 lineup, designed for faster, low-latency speech synthesis with expressive, controllable audio output. It offers significant enhancements in tone versatility and expressivity so that developers can generate speech that better matches style prompts, from storytelling narrations to character voices, with more natural emotional range. It features precision pacing, which allows it to adjust speech tempo based on context, delivering faster sections or slowing for emphasis more accurately according to instructions. It also supports multi-speaker dialogues with consistent character voices for scenarios like podcasts, interviews, or conversational agents, and improved multilingual handling so each speaker’s unique tone and style persist across languages. Gemini 2.5 Flash TTS is optimized for lower latency, making it ideal for interactive applications and real-time voice interfaces. -
8
Rekam AI
Rekam AI
Rekam AI is an all-in-one voice creation platform offering text to speech, speech to text, voice cloning, and AI voice generation. It uses high-quality, human-like voice models to transform written text into natural-sounding audio. Rekam AI provides a free text-to-speech tool that allows users to generate lifelike narration instantly. The platform includes a curated voice library with multiple male and female voices across accents and tones. Voice cloning enables users to create realistic digital voice replicas using short audio samples. Rekam AI also supports accurate speech-to-text transcription for meetings, interviews, and content creation. Overall, it serves as a complete voice studio for modern audio production.Starting Price: $8.50/month -
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beepbooply
beepbooply
beepbooply is an online text-to-speech AI voice generator that lets users convert written text into realistic, natural-sounding audio with a click. Choose from over 900 voices across 80+ languages and create audio content for voiceovers, podcasts, videos, customer service, social media, training materials, and other personal or commercial projects. It uses cutting-edge AI voices designed to produce natural and realistic speech patterns, with voice models provided by Google, Microsoft, and Amazon. The workflow is simple, choose a voice, input the text you want to convert to speech, generate the audio, then listen to it, save it, and download it. Each language offers multiple voices with their own sound, and users can mix and match different voices to find the right tone for each project. beepbooply also includes customization options such as pacing, pitch, volume, and speaking styles, helping users shape the voice to fit the content.Starting Price: $7 per month -
10
Azure AI Speech
Microsoft
Build voice-enabled apps confidently and quickly with the Speech SDK. Transcribe speech to text with high accuracy, produce natural-sounding text-to-speech voices, translate spoken audio, and use speaker recognition during conversations. Create custom models tailored to your app with Speech studio. Get state-of-the-art speech to text, lifelike text to speech, and award-winning speaker recognition. Your data stays yours, your speech input is not logged during processing. Create custom voices, add specific words to your base vocabulary, or build your own models. Run Speech anywhere, in the cloud or at the edge in containers. Quickly and accurately transcribe audio in more than 92 languages and variants. Gain customer insights with call center transcription, improve experiences with voice-enabled assistants, capture key discussions in meetings and more. Use text to speech to create apps and services that speak conversationally, choosing from more than 215 voices, and 60 languages. -
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Perplexity Decisions API
Perplexity
Perplexity’s Decisions API is built for fast, structured decisions that software can use directly. Instead of generating free-form text, it reads natural-language text, JSON, or images as shared state and returns typed answers with probabilities. Developers can attach one or more named questions to the same input and choose among three question types. noul handles yes-or-no judgments and returns the probability of yes from 0 to 1. choice selects from developer-defined options and returns the most likely option, the probability of every option, and a confidence score. score evaluates content against an ordered rubric and returns a probability-weighted score, the full probability distribution, and confidence. The API is designed for tasks such as classification, routing, grading against a rubric, severity assessment, sentiment analysis, or any decision that can be compared against a threshold. -
12
Clef-flash
Cloudflare
Clef-flash is a fast 9B multimodal decision model that turns a state and a schema of typed questions into structured decisions. It can read state information as text, JSON, images, or video and returns a probability for every allowed option of every question. The model supports a 24,576-token context window and vision input, allowing developers to evaluate structured application data and visual content within the same workflow. Clef Flash supports three typed question formats: noul for estimating the probability that a proposition is true, choice for selecting among predefined options with per-option probabilities, and score for evaluating an input against ordered criteria and returning a probability-weighted score. Applications can submit from 1 to 64 questions in a single request, with answers returned under the same question IDs. Example uses include deciding whether a support request is urgent, routing it to the correct team, and scoring the severity of customer impact. -
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Liquid d1
Liquid AI
d1 is Liquid AI’s first decision model, built to answer structured questions about a situation with probabilities rather than generating text. It takes unstructured data such as text, images, or both, along with one or more questions, processes them in a single forward pass, and returns probabilities without generating output tokens. d1 supports three question types: noul for yes-or-no decisions, choice for selecting among labels with a probability for each option, and score for placing an input on an ordered scale using probability-weighted levels. Multiple questions can be evaluated against the same state in one request, making it useful for real-time decision workflows. Liquid AI demonstrates d1 across applications such as filtering support tickets, browsing code repositories, organizing documents into smart folders, operating websites, compacting agent context, inspecting industrial parts, and playing games from screenshots.Starting Price: Free -
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Vocallab AI
Vocallab AI
Vocallab AI is a professional text-to-speech platform that delivers high-quality, realistic AI-generated voices for all your audio content needs. Transform written text into natural-sounding speech with advanced voice synthesis technology tailored for creators and businesses. Features: • Text to Speech: Turns your written documents or scripts into clear spoken audio. • Natural Voices: Creates lifelike AI voices that sound human instead of robotic. • Professional Quality: Provides high fidelity audio suitable for business and creative projects. • Voice Synthesis: Uses advanced technology to generate realistic and expressive speech. • Content Creation: Helps you easily produce audio for videos, presentations, and more. -
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Voxtral TTS
Mistral AI
Voxtral TTS is a state-of-the-art, multilingual text-to-speech model designed to generate highly realistic and emotionally expressive speech from text, combining strong contextual understanding with advanced speaker modeling to produce natural, human-like audio output. Built as a lightweight model with around 4 billion parameters, it delivers efficient performance while maintaining high quality, enabling scalable deployment for enterprise voice applications. It supports nine major languages and diverse dialects, and can adapt to new voices using only a short reference audio sample, capturing not just tone but also rhythm, pauses, intonation, and emotional nuance. Its zero-shot voice cloning capabilities allow it to replicate a speaker’s style without additional training, and it can even perform cross-lingual voice adaptation, generating speech in one language while preserving the accent of another. -
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Fish Audio
Hanabi AI
Fish Audio provides innovative AI-powered solutions for text-to-speech (TTS), voice cloning, and speech-to-text (STT) technologies. The platform is designed for businesses and developers looking to integrate high-quality, realistic voice synthesis into their applications. Fish Audio offers voice cloning tools that allow users to replicate voices, and its generative AI technology can produce expressive, natural-sounding speech in multiple languages. Additionally, Fish Audio supports an API for easy integration and has expanded capabilities with a voice activity detection feature. Whether for content creation, virtual assistants, or customer support, Fish Audio offers powerful solutions for a variety of industries.Starting Price: Free -
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Parallel Decisions API
Parallel
Parallel Decisions API is a hosted, web-grounded classification API for developers building software, data-enrichment pipelines, and AI-agent workflows. A request supplies context and one or more bounded questions; the API returns typed answers with probabilities and citations to supporting web sources. Multiple questions can share context in a single request, supporting uses such as company or vendor qualification, lead routing, compliance screening, content filtering, and agent guardrails. By retrieving current web evidence, it can assess facts that may have changed since a model's training data. Developers call the REST endpoint with an API key or access the web_decisions tool through Parallel's MCP server. A hosted playground and documentation support testing and implementation.Starting Price: $0.001/request -
18
Neiro
Neiro
Turn your text into natural-sounding speech in 140+ languages. Customize the voice of AI clones. Neiro produces human-like voices that match the speaker's appearance. Generate human-like lips, tongue, and micro-expressions that accurately represent your brand script or audio speech. Neiro AI clones communicate with users and answer questions naturally, as a human would. Generate advertising and marketing videos in seconds instead of days or weeks. Achieve higher conversion rates and engagement with highly personalized videos. Create personalized and engaging videos with AI avatars at scale. Leverage the power of Neiro for your business at no cost. Video generation, text-to-speech, voice conversion, and Ad Wizard – all our latest AI technologies at your fingertips and are available for free during the open beta testing period. -
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Cartesia Sonic-3
Cartesia
Cartesia Sonic-3 is a real-time, streaming text-to-speech (TTS) model designed to generate ultra-realistic, expressive voice output with extremely low latency, enabling AI systems to speak as fluidly as humans in live interactions. Built on advanced state space model architecture, Sonic delivers high-quality speech while achieving near-instant response times, with audio generation beginning in as little as 40–100 milliseconds, making conversations feel seamless rather than delayed. It is optimized for conversational AI use cases, acting as the “voice layer” for AI agents by converting text into natural-sounding speech that includes emotional nuance such as excitement, empathy, or even laughter. It supports more than 40 languages with native-level voices and accent localization, allowing developers to build globally accessible applications with consistent quality across regions.Starting Price: $4 per month -
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VoiceOverMaker
VoiceOverMaker
Manage your voice over videos or audio files in projects. Edit your videos in our modern voice over editor. Our video editor also allow time stretch. Customize speech with pitch and speech speed controls. Allow faster or slower speech. Add sound or accent to a selected word. You can even let the voice whisper or breathe. Select your video (without upload) and enter your text directly below the video and a voice will be automatically generated. Automatically convert your voice over or text-to-speech in multiple languages. The automatic translation makes this possible with just one click. You have the possibility to record a video (e.g. screencast) directly with your browser and create a voice over for it. Transcribe your audio and translate it automatically. Dub and translate your video automatically with transcribe and text to speech. -
21
Inworld TTS
Inworld
Inworld TTS is a state-of-the-art text-to-speech platform designed to deliver ultra-realistic, context-aware speech synthesis and precise voice-cloning capabilities at a radically accessible price. The flagship model, TTS-1, is optimized for real-time applications and supports low-latency streaming (first audio chunk in ≈200 ms) as well as multiple languages (including English, Spanish, French, Korean, Chinese, and more). Developers can use instant zero-shot voice cloning (5-15 seconds of audio) or professional fine-tuned cloning, add voice-tags for emotion, style, and non-verbal sounds, and switch languages while preserving voice identity. The larger TTS-1-Max model (in preview) offers even more expressive speech and multilingual strength. The platform supports both API and portal access, streaming or batch mode, and is designed for everything from interactive voice agents and gaming characters to branded audio experiences.Starting Price: $0.005 per minute -
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Gemini 3.5 Live Translate
Google
Gemini 3.5 Live Translate is Google’s latest audio model for live speech-to-speech translation, delivering near real-time translation in more than 70 languages. The model automatically detects multilingual input and generates smooth, natural-sounding translated speech that preserves the speaker’s intonation, pacing, and pitch. Unlike turn-by-turn translation systems that wait for someone to finish speaking before responding, Gemini 3.5 Live Translate processes speech as it streams and generates translated audio continuously, balancing the need for context with the need to stay in sync. It stays only a few seconds behind the speaker throughout a session, helping conversations feel more fluid and natural, without awkward pauses. It is built for multilingual calls, meetings, lessons, broadcasts, live interpretation, dubbing, simultaneous translation, and voice translation applications. -
23
Murf AI
Murf AI
Murf AI is a text-to-speech and AI voice generation platform designed to create realistic voiceovers quickly and efficiently. It allows users to convert text into natural-sounding speech using a wide range of voices and languages. The platform includes a studio environment where users can customize tone, style, and pacing for different content needs. Murf AI supports use cases such as e-learning, podcasts, advertisements, and audiobooks. It also offers AI dubbing capabilities for translating and localizing content into multiple languages. Developers can integrate its text-to-speech functionality into applications using a high-performance API. The platform is optimized for speed and scalability, making it suitable for both individual creators and enterprises. With its advanced voice technology, Murf AI helps streamline audio content production.Starting Price: $9/one-time -
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SubQ Snap 1.1
Subquadratic
SubQ Snap is a hosted multimodal decision model for developers building AI agents and enterprise workflows. Through Subquadratic’s API, applications send text or image context with defined questions and receive structured answers such as labels, choices, scores, and probabilities. This supports tasks including tool and file selection, routing, triage, guardrails, ranking, classification, and checking whether a test or result meets specified criteria. The model accepts up to 384K tokens of context and supports image input. It is designed for bounded decisions rather than open-ended text generation, so it can be used alongside a language model that handles planning or writing. Public-preview API documentation includes request examples, model access details, and decision formats.Starting Price: $0.05/1M input tokens -
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Voxtral Mini Transcribe 3
Mistral AI
Voxtral Mini Transcribe 3 is a speech-to-text model from Mistral AI that converts audio recordings into written transcripts through an API. Developers can submit audio for batch transcription and receive text with timestamps and speaker labels. It supports multilingual transcription, speaker diarization, and context biasing, which lets an application supply names or specialized vocabulary to guide recognition. The model is designed for developers building applications and audio workflows that need to make recorded speech searchable, attribute words to speakers, or align transcript segments with audio. Teams can call it through Mistral's hosted API and incorporate its output into their own software, such as transcription pipelines and voice-enabled services. It is a model/API offering rather than a standalone recording or editing application.Starting Price: $0.0035/min -
26
CoeFont
CoeFont
CoeFont is a global AI voice platform designed to generate, customize, and use high-quality digital voices across multiple languages, enabling users to transform text or speech into natural, humanlike audio for a wide range of applications. It provides a comprehensive suite of tools, including text-to-speech conversion, voice creation, voice cloning, and voice transformation, allowing users to produce expressive audio content with customizable tone, pacing, and style. It offers access to a large library of thousands of AI voices and supports multilingual output, making it suitable for content creation, communication, and automation across different regions. In addition to voice generation, CoeFont includes real-time interpretation capabilities that translate speech into other languages with low latency, enabling smooth communication in meetings, conferences, and customer support scenarios. It also allows users to create their own AI voice by recording samples.Starting Price: $20 per month -
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Supavocal
Supavocal
Supavocal is an AI voice studio for text-to-speech, voice cloning, and speech-to-text. Turn text into expressive, studio-quality speech, clone any voice from about 15 seconds of audio, and transcribe recordings to text. Teams use Supavocal for video voiceovers, audiobook narration, character voices for games and animation, conversational chatbots and voice agents, and transcription, with a voice API for developers.Starting Price: $49/month -
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Dubbix
Qorden AI
Dubbix is a web-based AI media localization and creation platform for video creators, educators, marketing and learning teams, agencies, and media organizations. It translates and dubs uploaded videos into other languages, with voice cloning and lip synchronization to retain a speaker’s voice characteristics. The platform also includes text-to-speech, speech-to-speech voice conversion, accent shifting, audio/video transcription and summarization, and a creative studio for generating and editing video content. Users can upload MP4 or MOV video, select source and target languages, process a dub, and download the result. Dubbix also offers developer APIs for dubbing, speech synthesis, and media summarization, enabling teams to build localization workflows into their own applications.Starting Price: $15/month -
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CereWave AI
CereProc
CereProc is excited to announce our new neural text-to-speech system, CereWave AI, powered by advanced machine learning technology. CereWave AI is available now in the CereVoice Cloud. CereWave AI generates speech that sounds more natural than any other text-to-speech system, producing a new level of human-like emphasis and inflection. The model creates audio waveforms from scratch, using a deep neural network that has been trained using large amounts of speech. During training, the network extracts the underlying structure of the voice and learns to produce realistic speech waveforms. CereWave AI not only produces a voice that is nearly indistinguishable from human speech but also enables full editing and control, changing it to speak any language, gender, accent, or age. Typical text-to-speech systems require 30 hours of recordings, but CereWave AI needs just 4 hours of data to generate a high-quality voice. -
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Laya AI
Laya AI
Laya AI is an open source family of non-autoregressive System 1 decision models built for fast, typed decisions instead of free-form text generation. Given a state and structured questions, Laya evaluates them in a single forward pass and returns outputs that application code can use directly. It supports three decision types: choice, which selects among named options and returns probabilities; score, which places an input on an ordered rubric such as urgency or severity; and noul, which estimates the probability that a proposition is true. Laya is designed for workloads such as agent and model routing, support ticket triage, guardrails, intent classification, risk and fraud scoring, workflow escalation, RAG filtering, moderation, and phishing detection. It can route requests by department, score urgency, flag refund or churn signals, detect policy or abuse conditions, and escalate uncertain cases to a larger model or human reviewer.Starting Price: Free -
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Eleven v4
ElevenLabs
Eleven v4 is a text-to-speech model from ElevenLabs for generating expressive spoken audio from written scripts. It supports multi-speaker dialogue, emotional direction and audio-event tags, voice cloning, and consistent speaker identity across generated scenes. Creators, publishers, and production teams can use it for narration, audiobooks, character dialogue, video and game voiceovers, and multilingual projects. Developers can generate speech through the ElevenLabs web application or API; the related Eleven v4 Turbo model is intended for real-time speech and voice-agent scenarios. Eleven v4 supports 90+ languages. A free plan includes monthly credits for personal use, while paid plans provide higher credit limits and additional features.Starting Price: $0 -
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AudioTextHub
AudioTextHub
AudioTextHub is a free, powerful online text-to-speech platform that leverages advanced AI voice synthesis to transform your text into natural, expressive speech within seconds. Whether you're a content creator, educator, developer, or accessibility advocate, AudioTextHub offers a seamless solution to bring your words to life. Key Features: - Natural Voice Synthesis: Access over 500 lifelike voices across multiple languages and accents, delivering speech with human-like intonation and emotion. - Multi-language Support: Convert text to speech in numerous languages, catering to a global audience. - Quick Conversion: Transform your text into high-quality audio in seconds, enhancing productivity and efficiency. - Voice Customization: Adjust speed, pitch, and emphasis to tailor the voice output to your specific needs. - API Integration: Easily integrate text-to-speech capabilities into your applications with our straightforward API. - Secure Processing -
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TextReader.ai
TextReader.ai
Generate lifelike audio in seconds, ideal for podcasts, video voice-overs, personal greetings, IVR phone systems, and more. Free text-to-speech generator with realistic AI voices. Unlock the power of voice with TextReader, a user-friendly tool designed to transform written words into realistic audio effortlessly. Say goodbye to the monotony of reading, with TextReader, you can breathe life into your content at no cost. Featuring high-fidelity TTS WaveNet voices, our text-to-speech tool reads text aloud and enables you to download voice audio in MP3 format. Save on production costs by converting any text content to realistic audio in seconds. Simply input your text, choose the voice actor, and let TextReader do the rest. With TextReader's simple interface, crafting engaging and natural-sounding audio has never been easier. AI text-to-speech is a game-changer for personal productivity. Consume longer-form content on-the-go, be it while driving, exercising, or during a commute. -
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Google has released updated Gemini audio models that significantly expand the platform’s capabilities for natural, expressive voice interactions and real-time conversational AI with the introduction of Gemini 2.5 Flash Native Audio and improved text-to-speech technology. The updated native audio model powers live voice agents that can handle complex workflows, follow detailed user instructions more reliably, and maintain smoother multi-turn conversations by better recalling context from previous turns. It is now available across Google AI Studio,Gemini Enterprise Agent Platform, Gemini Live, and Search Live, enabling developers and products to build interactive voice experiences such as intelligent assistants and enterprise voice agents. In addition to the real-time voice improvements, Google enhanced the underlying Text-to-Speech (TTS) models in the Gemini 2.5 family to offer greater expressivity, tone control, pacing adjustments, and multilingual support.
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35
Naturaltts
Naturaltts
Naturaltts is a text-to-speech platform designed for universities, education teams, researchers, and accessibility-focused workflows. It helps organizations convert text, PDFs, and DOCX files into clear, natural-sounding audio in a structured environment built for academic and professional use. Unlike generic text-to-speech tools built mainly for individual listening, Naturaltts is designed around how education teams actually evaluate and adopt software. The platform supports real document-to-audio workflows, multilingual listening, shared team evaluation, and clearer admin visibility during pilots and rollout. Naturaltts is especially well suited for: universities and colleges accessibility and disability support teams teaching and learning departments academic operations teams researchers and multilingual academic workflows Key capabilities Convert text into speech quickly Upload and process PDF and DOCX files Select language and matching voices Generate clear audio -
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Solar Decide
Upstage
Solar Decide is Upstage’s structured decision model, serving as a System One endpoint on Solar Mini 4. Instead of generating prose, it takes a state together with one or more typed questions and returns a choice, score, or yes/no answer with calibrated probabilities taken directly from the model. Each question is handled in a single forward pass, making the model suited to fast classification, routing, policy checks, prioritization, and other structured decision tasks. The choice type selects among predefined options and returns the selected option, individual probabilities, and confidence. The score type evaluates an input against ordered criteria and returns a probability-weighted score, legend, probability distribution, and confidence. The noul type returns the probability that a yes-or-no proposition is true. Multiple questions can share the same state in one request, and the state can be provided as text or any JSON value serialized into the prompt.Starting Price: $0.1 per 1M tokens -
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Voicesense
Voicesense
Make sound decisions, powered by voice. Discover people's true behavior with Voicesense predictive analytics—and boost your bottom line. Predict future personal behaviors Powered by Voice. Using machine learning techniques, we provide a personalized prediction of a person’s behavior applicable to a wide range of fields including risk management, human capital recruiting and retention, sales conversion, healthcare and more. Loan Default Predictor. Forecast short-term loan applicants’ default probability. Analyzing hundreds of speech parameters transformed into a unique profile of a person’s behavioral tendencies. Accurate predictions only one minute into a call for quick decision making. Patented technology grounded in extensive speech research. Award-winning solution turning voice into applicable and valuable predictions. Language independent and culturally unbiased analysis. Our fully automated process analyzes live stream or pre-recorded audio files. -
38
TTSLabs
TTSLabs
TTSLabs gives streamers the ability to customize their text-to-speech donations, enable custom voices, add unique sound clips and more! Seamless management and playback of text-to-speech. Allows easy customization of prices, voices, clips, and more. 20 seconds of audio can be generated in less than 3 seconds, even on an entry-level CPU. Sync our desktop app to allow your moderators to control text-to-speech through Streamlabs or StreamElements dashboard. Viewers can check enabled alerts, voices, clips, and minimum values for text-to-speech. Contact us to get your own unique voice! Get access to your own and other voices on your stream! Dedicated desktop app, faster than real-time processing. Sync with Streamlabs and StreamElements, with custom guides for viewers. -
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Gemini 3.8 Flash TTS
Google
Gemini 3.8 Flash TTS is Google’s expressive text-to-speech model for creating custom voices, directed performances, and multilingual audio experiences. The model can generate original voices from natural-language prompts by specifying characteristics such as role, accent, tone, pacing, and vocal style across more than 100 languages and dialects. Users can also replicate an authorized voice from a short audio sample, with consent verification, SynthID watermarking, and C2PA credentials supporting responsible voice creation. Gemini 3.8 Flash TTS provides line-by-line performance control, long-form speech generation, two-speaker scene staging, and support for nonverbal cues such as laughs, sighs, gasps, and conversational backchanneling. It is suited to use cases including games, audiobooks, podcasts, dubbing, interactive voice agents, branded audio, and media localization. -
40
TextSpeech Pro
Digital Future
TextSpeech Pro is a professional text-to-speech software product, proudly awarded "the best text to speech software in the world". Synthesize text-to-speech from any document format (text, Microsoft Word, PDF, Microsoft Excel, RTF, etc) using a variety of voices and languages. Export the synthesized speech from documents to a variety of audio file formats in three modes (quick, normal and batch). Create and modify conversations, bookmarks and pauses (silence breaks) in a document using an advanced text-to-speech editor. Modify speech properties (voice, speed, volume, pitch, word highlighting) and speech entities (bookmarks, conversations, pauses) on the fly. Extract text from scanned documents and convert it to speech or audio files. Use a fully featured document editor with many text processing features (text manipulation, spell checker, print and print preview, find and replace, go to line, customizable fonts, zoom capabilities, and document properties view).Starting Price: $24.98 one-time payment -
41
Orate
Orate
Orate is an AI toolkit for speech that enables developers to create realistic, human-like speech and transcribe audio through a unified API compatible with leading AI providers such as OpenAI, ElevenLabs, and AssemblyAI. The platform offers text-to-speech functionality, allowing users to convert text into lifelike speech using a simple API that integrates seamlessly with various providers. For instance, by importing the 'speak' function from Orate and the desired provider, developers can generate speech from text prompts. Additionally, Orate provides speech-to-text capabilities, transforming spoken words into meaningful text with unparalleled accuracy, speed, and reliability. By importing the 'transcribe' function and the chosen provider, users can transcribe audio files into text. The toolkit also supports speech-to-speech transformations, enabling users to change the voice of their audio using a straightforward voice-to-voice API compatible with leading AI providers. -
42
OpenAI Decisions API
OpenAI
The Decisions API turns text and images into typed decisions an application can use, evaluating inputs about 10x faster than the Responses API. Developers provide a model, shared input evidence, and one or more questions describing what should be evaluated, and the API returns structured answers that can be used to classify content, route requests, prioritize work, or make threshold-based decisions. It supports three question types: predicate checks whether a condition is true and returns a probability from 0 to 1; choice selects one value from a fixed set and returns option probabilities and confidence; and score evaluates an input against ordered rubric levels and returns a probability-weighted score. Inputs can be plain text or user messages containing both text and images, allowing applications to evaluate cases such as visible product damage, request intent, document type, issue severity, or answer relevance. -
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Dograh
Dograh
Dograh is an open source, self-hostable voice agent platform with a no-code workflow builder for creating production voice agents. Teams can choose their own inbound channels, speech-to-text, LLM, text-to-speech, and telephony providers, or replace the traditional cascade with speech-to-speech models for direct audio-in, audio-out conversations with natural turn-taking, interruption handling, and low latency. The platform supports inbound and outbound calling, widgets, telephony integrations, observability, traces, real-time analytics, hybrid pre-recorded voice plus TTS, and more than 70 languages. Its MCP server lets Claude Code, Cursor, OpenClaw, Codex, and other agent runtimes create, modify, and deploy voice agents directly from development environments. Dograh can run on your own servers, inside a private cloud or VPC, or in a managed environment, with support for models hosted entirely within your perimeter.Starting Price: 1¢ per minute -
44
Gemini 3.8 Flash-Lite TTS
Google
Gemini 3.8 Flash-Lite TTS is Google’s cost-efficient text-to-speech model designed for high-volume dubbing, audio production, and expressive voice-agent applications. The model provides fine-grained control over tone, pacing, expressive nuance, and line-by-line vocal delivery. It supports long-form speech generation while maintaining natural pacing, voice quality, and speaker consistency across extended content. Native two-speaker scene staging enables multi-turn dialogue with distinct voices and natural conversational turn-taking from a single script. Gemini 3.8 Flash-Lite TTS supports more than 100 languages and can add nonverbal cues and backchanneling to create more natural conversational audio. The model is available through the Gemini API and Google AI Studio, with deployment through Google Vids and planned enterprise availability through Gemini Enterprise. -
45
Blogcast
Blogcast
Generate clear, natural-sounding speech from your blog posts and content for podcasts, videos, and more using text-to-speech technology. No microphone is required! Blogcast generates audio from any text-based content. Create a podcast, download the raw audio files or use a simple embed on your site. Enhance WordPress posts, Medium articles, and website content with audio to expand your reach. Quickly create voice-over tracks for YouTube videos without hiring expensive talent. Generate podcast episodes as new articles are posted. Explain concepts and provide audio for courses and online training. Add audio to product explainers, demos, and support materials. Publish audio chapters from existing book content. Convert your articles into clear, natural-sounding audio using AI-powered text-to-speech technology. Add articles from a URL or RSS feed and automatically fetch and convert new articles as they are published.Starting Price: $8 per month -
46
WP Audio Podcast
WP Audio Podcast
If you’re a blogger, you’ve already done the hard part by creating great content — so you should share that content as widely as possible! One way is by giving your audience an audio option, as well as your written blog. Making a podcast out of your blog breathes new life into the work you’re already doing — you can make your unique blogging voice actually audible! By converting your blog into a podcast, you’re leveraging the power of audio to grow your brand, audience, and income — without any extra work. Hundreds of millions of listeners (and counting) consume podcasts every day, and they’re constantly looking for fresh voices and perspectives. The Long Audio API provides an asynchronous synthesis of long-form text-to-speech. For example audio books, news articles and documents. There’s no need to deploy a custom voice endpoint. Unlike the Text-to-speech API used by the Speech SDK, the Long Audio API can create synthesized audio longer than 10 minutes. -
47
GPT Reader
GPT Reader
GPT Reader is a powerful, free AI text-to-speech (TTS) extension that transforms documents, web content, and articles into natural-sounding speech using ChatGPT voices. Whether you're reading PDFs, Google Docs, or just text from a website, GPT Reader instantly reads it aloud with lifelike clarity. This tool stands out with key features like downloadable AI-generated audio, multi-format support, and full playback control. It’s built for everyone—students who want to listen to notes, professionals who prefer audio reports, or individuals with reading difficulties who benefit from spoken content. With no cost or subscription, GPT Reader is the perfect companion for hands-free reading and productivity. Just click the extension icon, upload your text, and enjoy an AI-powered listening experience anywhere.Starting Price: $0 -
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Amazon Nova 2 Sonic
Amazon
Nova 2 Sonic is Amazon’s real-time speech-to-speech model designed to deliver natural, flowing voice interactions without relying on separate systems for text and audio. It combines speech recognition, speech generation, and text processing in a single model, enabling smooth, human-like conversations that can shift effortlessly between voice and text. With expanded multilingual support and expressive voice options, it produces responses that sound more lifelike and contextually aware. Its one-million-token context window allows for long, continuous interactions without losing track of prior details. It supports asynchronous task handling, meaning users can continue speaking, change topics, or ask follow-up questions while background tasks, such as searching for information or completing a request, continue uninterrupted. This makes voice experiences feel more fluid and less bound by traditional turn-based dialog constraints. -
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Cartesia Sonic-3.6
Cartesia
Sonic is a real-time text-to-speech model built for voice agents, combining natural delivery, sub-90ms latency, and native support for more than 40 languages. It is designed to make voice interactions feel effortless, with tone that adjusts to context, consistent pacing, and speech that follows the natural rhythm of conversation. By default, Sonic interprets the emotional subtext of a transcript and calibrates delivery automatically, while non-verbal expressions such as laughter can be inserted directly into the text. The model follows transcripts faithfully, produces clean audio across languages and voices, and handles alphanumeric content such as order numbers, phone numbers, IDs, and email addresses naturally without preprocessing. Context-aware pronunciation helps heteronyms sound correct from surrounding words, while custom pronunciation dictionaries let teams define how proper nouns and domain-specific terms should be spoken.Starting Price: $5 per month -
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CereProc
CereProc
Engage customers with your brand using CereProc's uniquely characterful and natural sounding text-to-speech (TTS) voices. CereProc's development tools give you everything you need to integrate award-winning text-to-speech functionality into your applications. CereProc's uniquely characterful text-to-speech voices can replace the default voice on your computer, tablet, or phone, with a wide range of accents and languages. Revolutionary cost effective online voice cloning tool that allows you to carry out recordings in your own home in as little as a couple of hours. CereProc has developed the world's most advanced text to speech technology. Our voices not only sound real, they have character, making them suitable for any application that requires speech output. At CereProc, our wide range of text-to-speech servers, software development kit, cloud and custom voices are used for a wide range of different applications.Starting Price: $35.78 one-time payment
