Best On-Premises Speech Recognition Software

Google Cloud Speech-to-Text excels in speech recognition, providing a reliable solution for transcribing spoken words into text. Its advanced machine learning models can detect a wide range of accents, dialects, and speech patterns, offering highly accurate transcription services across various languages. The system’s real-time recognition capabilities make it ideal for applications that require immediate transcription, such as customer service or virtual assistants. Additionally, the service adapts to context, enabling it to handle noisy environments and technical terms with ease. With $300 in free credits for new customers, it's a cost-effective way to incorporate speech recognition into your business or app.

Best-in-Market Speech-to-Text & Voice AI for Enterprises. Speechmatics delivers industry-leading Speech-to-Text and Voice AI for enterprises needing unrivaled accuracy, security, and flexibility. Our enterprise-grade APIs provide real-time and batch transcription with exceptional precision—across the widest range of languages, dialects, and accents. Powered by Foundational Speech Technology, Speechmatics supports mission-critical voice applications in media, contact centers, finance, healthcare, and more. With on-prem, cloud, and hybrid deployment, businesses maintain full control over data security while unlocking voice insights. Trusted by global leaders, Speechmatics is the top choice for best-in-class transcription and voice intelligence. 🔹 Unmatched Accuracy – Superior transcription across languages & accents 🔹 Flexible Deployment – Cloud, on-prem, and hybrid 🔹 Enterprise-Grade Security – Full data control 🔹 Real-Time & Batch Processing – Scalable transcription

Transforming customer engagement with AI-driven speech recognition and voice authentication technology. We’ve spent the last 20 years empowering our partners’ success through collaboration. Our curiosity keeps us innovating for the next 20. Our flexible speech-enabling technology enables you to build a solution that fulfills all your customers’ demands, affordably and reliably. We do one thing, and we do it well. And that's speech-enabling your applications. Finally, deliver great voice automation and interactions. Whether short and simple commands, or conversational questions, LumenVox ASR and TTS is accurate and affordable, helping you improve efficiencies on both sides of the phone line. You’ll never repeat yourself again. We provide you with the utmost flexibility from a capabilities, deployment and monetization perspective. If you can think it, you can build it with LumenVox. Shorten your development to deployment time with our easy, intuitive technology and toolsets.

Clarifai is a leading AI platform for modeling image, video, text and audio data at scale. Our platform combines computer vision, natural language processing and audio recognition as building blocks for developing better, faster and stronger AI. We help our customers create innovative solutions for visual search, content moderation, aerial surveillance, visual inspection, intelligent document analysis, and more. The platform comes with the broadest repository of pre-trained, out-of-the-box AI models built with millions of inputs and context. Our models give you a head start; extending your own custom AI models. Clarifai Community builds upon this and offers 1000s of pre-trained models and workflows from Clarifai and other leading AI builders. Users can build and share models with other community members. Founded in 2013 by Matt Zeiler, Ph.D., Clarifai has been recognized by leading analysts, IDC, Forrester and Gartner, as a leading computer vision AI platform. Visit clarifai.com

Picovoice is the first and only ubiquitous on-device voice AI platform. Picovoice offers speech-to-text, voice search, wake word, Speech-to-Intent (intent detection) and voice activity detection engines. Its stack can run on anything from embedded devices to web browsers, providing an immersive experience not achievable by any Big Tech.

Speech technologies based on machine learning to create voice assistants, automate call centers, monitor service quality, and perform other tasks. Leverage the advanced technology behind the wildly successful Alice voice assistant, now ready for use in your business. In a fraction of a second, SpeechKit accurately recognizes speech, allowing our clients' voice assistants to communicate quickly and easily. Choose the right version for you, the full version creates a smart voice assistant while the adaptive version gives your brand a unique voice in just a month. A solution for the most demanding customers who need to control speech processing and synthesis within their own infrastructure. SpeechKit’s ML models can now be deployed to your infrastructure. We offer both hybrid options and 100% on-premise deployments for sensitive traffic. The service can recognize audio in MP3, LPCM, and OggOpus formats.

Gladia is an advanced audio transcription and intelligence platform delivered via a unified API that supports both asynchronous (pre-recorded) and real-time streaming transcription, enabling developers to convert speech to text in over 100 languages with features like word-level timestamps, language detection, code-switching, speaker diarization, translation, summarization, custom vocabulary, and entity extraction. Its real-time engine achieves latencies under 300 ms while maintaining high accuracy, and it offers “partials” (intermediate transcripts) to improve responsiveness in live settings. The platform’s asynchronous API is powered by a proprietary Whisper-Zero model optimized for enterprise audio, and it lets clients apply add-ons such as enhanced punctuation, name consistency, custom metadata tagging, and export to subtitle formats (SRT, VTT).

Transforming customer engagement with AI-powered voice recognition and voice authentication technology. Our flexible voice-enabled technology allows you to create a solution that meets all of your customers' demands, affordably and reliably. We do one thing, and we do it well. And that's voice enablement for your apps. Finally, deliver great voice automation and interactions. Whether it's short, simple commands or conversational questions, LumenVox ASR and TTS are accurate and affordable, helping you improve efficiency on both sides of the phone line. You will never repeat yourself. Recognize multiple dialects from a single global language model to serve all your customers. We give you maximum flexibility from a capabilities, implementation and monetization perspective. If you can think it, you can build it with LumenVox

AppTek is a global leader in artificial intelligence (AI) and machine learning (ML) technologies for automatic speech recognition (ASR), neural machine translation (NMT), and natural language understanding (NLU). The AppTek platform delivers industry-leading, real-time streaming and batch technology solutions in the cloud or on-premise for organizations across a breadth of worldwide markets such as media and entertainment, call centers, government, enterprise business, and more. Built by scientists and research engineers who are recognized among the best in the world, AppTek’s solutions cover a wide array of languages, dialects, and channels. AppTek utilizes deep neural networks to transcribe and understand speech and text data, delivering more accurate and efficient tools.

SpeechWrite specializes in a range of cloud dictation and voice recognition agile workflow solutions designed to meet the flexible working needs of the modern-day professional. Scalable and future-proofed solutions to suit all types of organizations. Our industry-leading range of digital dictation and transcription solutions link authors and transcribers facilitating efficient communication. Individual and organizational workflow settings enhance flexibility to ensure you receive your written dictations quickly and efficiently when in the office or on the move. Use your most powerful tool, your voice, and put it to work. Our practical technology, sophisticated yet simple, allows you to enhance your working environment and simply work smarter. We listen, learn and collaborate to support you through every stage of the process while also offering professional guidance and support along the way.

Built for contact center agents, Hecttor transforms messy, emotional, and fast-paced customer speech into clear, understandable conversations — instantly and without disrupting workflows. Core Capabilities: - Real-Time Speech Speed Adjustment - Voice Boost and Audio Enhancement - Natural and Transparent Output - On-Device, Low-Latency Processing: All operations happen directly on the agent’s machine — ensuring real-time performance, zero cloud dependency, and maximum security. - Seamless Integration: Works with existing telephony and CRM platforms. No new hardware. No changes to agent workflows.