Alternatives to WhichModel
Compare WhichModel alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to WhichModel in 2026. Compare features, ratings, user reviews, pricing, and more from WhichModel competitors and alternatives in order to make an informed decision for your business.
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1
Seedance
ByteDance
Seedance 1.0 API is officially live, giving creators and developers direct access to the world’s most advanced generative video model. Ranked #1 globally on the Artificial Analysis benchmark, Seedance delivers unmatched performance in both text-to-video and image-to-video generation. It supports multi-shot storytelling, allowing characters, styles, and scenes to remain consistent across transitions. Users can expect smooth motion, precise prompt adherence, and diverse stylistic rendering across photorealistic, cinematic, and creative outputs. The API provides a generous free trial with 2 million tokens and affordable pay-as-you-go pricing from just $1.8 per million tokens. With scalability and high concurrency support, Seedance enables studios, marketers, and enterprises to generate 5–10 second cinematic-quality videos in seconds. -
2
Model Playground
Model Playground
Model Playground AI is a web‑based platform that lets you explore, compare, and prototype with over 150 (100+) leading AI models side by side in a single, unified interface. It provides two main modes, Explore for free‑form prompt testing and Workflows for guided, repeatable tasks, where you can adjust parameters (temperature, max tokens, etc.), submit prompts across multiple models simultaneously, and instantly see comparative outputs. Presets and saving options enable you to store your configurations and chat histories for easy reproducibility, while API endpoints and credit‑based subscriptions ensure seamless integration into your own applications without hidden markup fees. Its lightweight, no‑code design supports text, image, video, and code generation tasks in one dashboard, making it easy to benchmark model quality, optimize prompts, and accelerate AI‑driven projects.Starting Price: Free -
3
ChainForge
ChainForge
ChainForge is an open-source visual programming environment designed for prompt engineering and large language model evaluation. It enables users to assess the robustness of prompts and text-generation models beyond anecdotal evidence. Simultaneously test prompt ideas and variations across multiple LLMs to identify the most effective combinations. Evaluate response quality across different prompts, models, and settings to select the optimal configuration for specific use cases. Set up evaluation metrics and visualize results across prompts, parameters, models, and settings, facilitating data-driven decision-making. Manage multiple conversations simultaneously, template follow-up messages, and inspect outputs at each turn to refine interactions. ChainForge supports various model providers, including OpenAI, HuggingFace, Anthropic, Google PaLM2, Azure OpenAI endpoints, and locally hosted models like Alpaca and Llama. Users can adjust model settings and utilize visualization nodes. -
4
LayerLens
LayerLens
LayerLens is an independent AI model evaluation platform for understanding how models perform through verified results across benchmarks, prompt-level results, agentic benchmarks, and audit-ready comparisons across vendors. It helps teams compare more than 200 AI models side by side, with transparent benchmarks, model comparison tools, and consistent evaluation methods for accuracy, latency, behavior, and real-world applicability. LayerLens is built for deep model analysis through Spaces, where teams can group benchmarks and evaluations, explore task strengths, and track performance patterns in context. It supports continuous evaluation by running ongoing evals across model versions, prompt changes, judge updates, and live traces, helping teams detect quality regressions, drift, silent failures, contamination, and policy issues before they affect production. -
5
StarCoder
BigCode
StarCoder and StarCoderBase are Large Language Models for Code (Code LLMs) trained on permissively licensed data from GitHub, including from 80+ programming languages, Git commits, GitHub issues, and Jupyter notebooks. Similar to LLaMA, we trained a ~15B parameter model for 1 trillion tokens. We fine-tuned StarCoderBase model for 35B Python tokens, resulting in a new model that we call StarCoder. We found that StarCoderBase outperforms existing open Code LLMs on popular programming benchmarks and matches or surpasses closed models such as code-cushman-001 from OpenAI (the original Codex model that powered early versions of GitHub Copilot). With a context length of over 8,000 tokens, the StarCoder models can process more input than any other open LLM, enabling a wide range of interesting applications. For example, by prompting the StarCoder models with a series of dialogues, we enabled them to act as a technical assistant.Starting Price: Free -
6
Geekflare Chat
Geekflare
Geekflare Chat is an all-in-one AI platform that bundles the world’s most powerful models from OpenAI, Anthropic Claude, and Google Gemini into a collaborative workspace. By consolidating OpenAI, Anthropic, and Google into one interface, Geekflare Chat removes the friction of modern AI. Teams can use the Multi-Model Comparison tool to evaluate responses from GPT-5.4, Claude 4.5, and Gemini 3.1 Pro side-by-side. Collaboration is built natively into the platform, allowing teams to share workspaces, build a centralized AI Knowledge Base, and standardize outputs with a shared Prompt Library. Start chatting for free, or upgrade to our Business Plan to give your entire team the AI advantage they need to move faster for just $29/month.Starting Price: $9/month -
7
16x Prompt
16x Prompt
Manage source code context and generate optimized prompts. Ship with ChatGPT and Claude. 16x Prompt helps developers manage source code context and prompts to complete complex coding tasks on existing codebases. Enter your own API key to use APIs from OpenAI, Anthropic, Azure OpenAI, OpenRouter, or 3rd party services that offer OpenAI API compatibility, such as Ollama and OxyAPI. Using API avoids leaking your code to OpenAI or Anthropic training data. Compare the code output of different LLM models (for example, GPT-4o & Claude 3.5 Sonnet) side-by-side to see which one is the best for your use case. Craft and save your best prompts as task instructions or custom instructions to use across different tech stacks like Next.js, Python, and SQL. Fine-tune your prompt with various optimization settings to get the best results. Organize your source code context using workspaces to manage multiple repositories and projects in one place and switch between them easily.Starting Price: $24 one-time payment -
8
thisorthis.ai
thisorthis.ai
Discover the best AI responses by comparing, sharing, and voting. thisorthis.ai streamlines AI model comparison, saving you time and effort. Test prompts across multiple models, analyze differences, and share them instantly. Optimize your AI strategy with data-driven comparisons, and make informed decisions faster. thisorthis.ai is your go-to platform for AI model showdowns. It lets you do a side-by-side comparison, share, and vote on AI-generated responses from multiple models. Whether you’re curious about which AI model provides the best answers or just want to explore the variety of responses, thisorthis.ai has you covered. Enter any prompt and see responses from various AI models side by side. Compare GPT-4o, Claude 3.5 Sonnet, Gemini 1.5 Flash, and other model responses with just a click. Vote on the best responses to help highlight which models are excelling. Share links to your prompts and the AI responses you receive easily with anyone.Starting Price: $0.0005 per 1000 tokens -
9
LLM Scout
LLM Scout
LLM Scout is an evaluation and analysis platform designed to help users benchmark, compare, and interpret the performance of large language models across diverse tasks, datasets, and real-world prompts within a unified environment. It enables side-by-side comparisons of models by measuring accuracy, reasoning, factuality, bias, safety, and other key metrics using customizable evaluation suites, curated benchmarks, and domain-specific tests. It supports the ingestion of user-provided data and queries so teams can assess how different models respond to their own real-world workflows or industry-specific needs, and visualize outputs in an intuitive dashboard that highlights performance trends, strengths, and weaknesses. LLM Scout also includes tools for analyzing token usage, latency, cost implications, and model behavior under varied conditions, helping stakeholders make informed decisions about which models best fit specific applications or quality requirements.Starting Price: $39.99 per month -
10
JustSimpleChat
JustSimpleChat
Our intelligent routing automatically selects the perfect AI for each task, giving you the best response every time. No more guessing which AI to use. Our intelligent routing system analyzes your prompt and selects the optimal model from 200+ options. Clean, distraction-free interface with instant response streaming. Focus on your work, not wrestling with complex UIs. No prompts are stored server-side unless you opt in, and our conversations remain private and secure. Get new models instantly as they launch, with no waiting for OpenAI to add them months later. Multiple models for teams, cost optimization built in, one invoice, all models, and priority support included. Our AI router automatically picks the best model for each task.Starting Price: $7.99 per month -
11
Klu
Klu
Klu.ai is a Generative AI platform that simplifies the process of designing, deploying, and optimizing AI applications. Klu integrates with your preferred Large Language Models, incorporating data from varied sources, giving your applications unique context. Klu accelerates building applications using language models like Anthropic Claude, Azure OpenAI, GPT-4, and over 15 other models, allowing rapid prompt/model experimentation, data gathering and user feedback, and model fine-tuning while cost-effectively optimizing performance. Ship prompt generations, chat experiences, workflows, and autonomous workers in minutes. Klu provides SDKs and an API-first approach for all capabilities to enable developer productivity. Klu automatically provides abstractions for common LLM/GenAI use cases, including: LLM connectors, vector storage and retrieval, prompt templates, observability, and evaluation/testing tooling.Starting Price: $97 -
12
ZenPrompts
ZenPrompts
Powerful prompt editor to help you create, refine, test, and share prompts. Every feature you need to create sophisticated prompts. ZenPrompts is 100% free to use during the current beta release. Just bring your own OpenAI API key and get started. With ZenPrompts you can build a portfolio of prompts that will showcase what you are capable of doing in the era of LLMs and AI. Sophisticated prompt design and engineering require you to seamlessly compare prompt output across multiple OpenAI models. ZenPrompts lets you instantly compare model output side-by-side, giving you the power to pick the right model based on what matters to you the most, whether it's quality, cost, or performance. ZenPrompts offers an elegant, minimalist platform to exhibit your prompt portfolio. With clean layouts and a user-friendly interface, ZenPrompts ensures that your creativity takes center stage. Elevate the impact of your prompts by presenting them beautifully, and captivate your audience.Starting Price: Free -
13
Fuser
Fuser
Fuser is a browser-based AI creative workspace that lets designers, creative directors, and studios build and run multimodal workflows across text, image, video, audio, 3D, and chatbot/LLM models, all on a single visual canvas. Instead of juggling separate AI tools and subscriptions, Fuser gives you a node-based workflow editor where you can chain models together, iterate on prompts, compare outputs, and ship real creative work with a clear process. Fuser is fully cloud-hosted and runs in the browser—no GPU or local installs. It’s model-agnostic: connect your own API keys from providers like OpenAI, Anthropic, Runway, Fal, and OpenRouter, or use Fuser’s pay-as-you-go credits that never expire. Built for creative and design teams, Fuser is ideal for campaign ideation, product and industrial visualization, motion tests, moodboards, and repeatable content pipelines. Designers can adopt in minutes, not hours, or weeks.Starting Price: $5 per month -
14
ModelMatch
ModelMatch
ModelMatch is an online platform that allows users to compare top open source vision-language models for image-understanding tasks without the need for coding. Users can upload up to four images and input specific prompts to receive detailed analyses from multiple models simultaneously. It evaluates models ranging from 1 billion to 12 billion parameters, all of which are open source with commercial licenses. For each model, ModelMatch provides a quality score (1-10) based on the model's performance for the given use case, processing time metrics, and real-time status updates during processing.Starting Price: Free -
15
Stableoutput
Stableoutput
Stableoutput is a user-friendly AI chat client that allows users to interact with popular AI models like OpenAI's GPT-4o and Anthropic's Claude 3.5 Sonnet without requiring coding knowledge. It operates on a bring-your-own-key model, meaning users utilize their own API keys, which are securely stored in the browser's local storage; these keys are not transmitted to Stableoutput's servers, ensuring privacy and security. The platform offers features such as cloud synchronization, a usage tracker to monitor API consumption, customization options for system prompts, and model settings like temperature and maximum tokens. Users can upload PDFs, images, and code files for AI analysis, facilitating more personalized and context-aware interactions. Additional functionalities include pinning and sharing chats with controlled visibility and managing message requests to optimize API usage. Stableoutput provides lifetime access with a one-time payment.Starting Price: $29 one-time payment -
16
Not Diamond
Not Diamond
Call the right model at the right time with the world's most powerful AI model router. Make the most of every model with relentless precision and speed. Not Diamond works out of the box with no setup, or train your own custom router with your evaluation data and benefit from model routing optimized to your use case. Select the right model in less time than it takes to stream a single token. Efficiently leverage faster and cheaper models without degrading quality. Program the best prompt for each LLM so you always call the right model with the right prompt. No more manual tweaking and experimentation. Not Diamond is not a proxy and all requests are made client-side. Enable fuzzy hashing on our API or deploy directly to your infra for maximum security. For any input, Not Diamond automatically determines which model is best suited to respond, delivering a state-of-the-art performance that beats every foundation model on every major benchmark.Starting Price: $100 per month -
17
DeepSeek R1
DeepSeek
DeepSeek-R1 is an advanced open-source reasoning model developed by DeepSeek, designed to rival OpenAI's Model o1. Accessible via web, app, and API, it excels in complex tasks such as mathematics and coding, demonstrating superior performance on benchmarks like the American Invitational Mathematics Examination (AIME) and MATH. DeepSeek-R1 employs a mixture of experts (MoE) architecture with 671 billion total parameters, activating 37 billion parameters per token, enabling efficient and accurate reasoning capabilities. This model is part of DeepSeek's commitment to advancing artificial general intelligence (AGI) through open-source innovation.Starting Price: Free -
18
Narrow AI
Narrow AI
Introducing Narrow AI: Take the Engineer out of Prompt Engineering Narrow AI autonomously writes, monitors, and optimizes prompts for any model - so you can ship AI features 10x faster at a fraction of the cost. Maximize quality while minimizing costs - Reduce AI spend by 95% with cheaper models - Improve accuracy through Automated Prompt Optimization - Achieve faster responses with lower latency models Test new models in minutes, not weeks - Easily compare prompt performance across LLMs - Get cost and latency benchmarks for each model - Deploy on the optimal model for your use case Ship LLM features 10x faster - Automatically generate expert-level prompts - Adapt prompts to new models as they are released - Optimize prompts for quality, cost and speedStarting Price: $500/month/team -
19
Agent S
Simular
Agent S is an open-source agentic framework built to enable autonomous computer use through an Agent-Computer Interface (ACI). It allows AI agents to operate graphical user interfaces similarly to humans by perceiving screens, reasoning through objectives, and executing actions across macOS, Windows, and Linux systems. The latest release, Agent S3, achieves state-of-the-art results on the OSWorld benchmark and surpasses human-level performance in complex multi-step computer tasks. By combining powerful foundation models such as GPT-5 with grounding models like UI-TARS, the framework translates visual inputs into accurate executable commands. Agent S supports multiple deployment options, including CLI, SDK, and cloud environments. It integrates seamlessly with leading model providers such as OpenAI, Anthropic, Gemini, Azure, and Hugging Face endpoints. -
20
Trismik
Trismik
Trismik is an AI model evaluation platform designed to help teams choose the right large language model for their specific use case using real data instead of assumptions or generic benchmarks. It focuses on turning model experimentation into clear, evidence-based decisions by allowing users to test and compare multiple models directly on their own datasets, rather than relying on public leaderboards or limited manual testing. It introduces tools such as QuickCompare, which enables side-by-side evaluation of 50+ models across key dimensions like quality, cost, and speed, making trade-offs visible and measurable in real-world conditions. Trismik also incorporates adaptive evaluation techniques inspired by psychometrics, dynamically selecting the most informative test cases and automatically scoring outputs across factors such as factual accuracy, bias, and reliability.Starting Price: $9.99 per month -
21
BaronRouter
BaronRouter
BaronRouter is an AI gateway and chat platform that brings many leading AI models and providers into one unified interface. Users can chat with different models, compare responses side by side, save prompts, create projects, use public personas, upload files, and keep conversation history in one place. BaronRouter is built around reliability and model choice. Its smart router can select a suitable model for a task, while automatic retry and fallback help keep conversations working when a provider is rate-limited, unavailable, or fails. The platform also includes persistent memory, shared workspaces, prompt and persona galleries, model performance stats, admin controls, usage analytics, and an OpenAI-compatible public API for developers. Developers can call BaronRouter through standard OpenAI SDK clients, including support for public persona endpoints such as persona-based chat completions.Starting Price: Free -
22
Patronus AI
Patronus AI
Patronus AI is an automated AI evaluation, security, and optimization platform for LLM applications and agentic systems. It helps teams confidently deploy AI products at scale by generating test suites, running experiments, logging traces, comparing outputs, monitoring production interactions, and evaluating model performance in real time. It provides industry-leading evaluators for RAG hallucinations, context quality, image relevance, answer correctness, prompt injection, sensitive data leakage, toxicity, bias, and other safety or reliability risks. Patronus Evaluators can score AI outputs on specific dimensions, and teams can also create custom evaluators for use-case-specific criteria. Its platform combines dashboards, APIs, plug-and-play evaluations, logs, traces, side-by-side comparisons, visualizations, analytics, and real-time alerts to help teams detect mistakes, benchmark models, improve prompts, and understand system behavior over time. -
23
Claude Sonnet 4.5
Anthropic
Claude Sonnet 4.5 is Anthropic’s latest frontier model, designed to excel in long-horizon coding, agentic workflows, and intensive computer use while maintaining safety and alignment. It achieves state-of-the-art performance on the SWE-bench Verified benchmark (for software engineering) and leads on OSWorld (a computer use benchmark), with the ability to sustain focus over 30 hours on complex, multi-step tasks. The model introduces improvements in tool handling, memory management, and context processing, enabling more sophisticated reasoning, better domain understanding (from finance and law to STEM), and deeper code comprehension. It supports context editing and memory tools to sustain long conversations or multi-agent tasks, and allows code execution and file creation within Claude apps. Sonnet 4.5 is deployed at AI Safety Level 3 (ASL-3), with classifiers protecting against inputs or outputs tied to risky domains, and includes mitigations against prompt injection. -
24
Kerlig
Kerlig
Kerlig is an AI-powered writing assistant for Mac that helps users save time and improve their communication at work by integrating with all apps. It supports multi-language features and allows you to proofread, summarize, translate, and extract key points from PDFs, documents, and web pages. Custom Actions and presets make it adaptable to your workflow. Custom Actions allow for editing prompts to make the AI model perform exactly what you need. Invoke them with a single click or a keyboard shortcut. Presets are personalized settings for AI models that give them a specific personality and guide their actions based on your preferences. For example, they can help the AI write emails in your style or take on roles like a software engineer or copywriter. Kerlig supports over 350 AI models, including providers like OpenAI, Google Gemini, Anthropic Claude, Perplexity, AWS Bedrock, OpenRouter, and more. It also supports running local models via Ollama and LM Studio integrations.Starting Price: $47 -
25
discode.ai
discode.ai
discode is an AI chat platform built around one input field, 100+ AI models, and automatic model selection, so users choose the rhythm, not the algorithm. Instead of juggling multiple subscriptions, tabs, benchmarks, and provider limits, users ask a question and discode picks the right model for the job. Every request is analyzed by topic, complexity, and language, then routed to the best available model based on quality, speed, sustainability, and the user’s own settings. Light tasks can go to fast, resource-efficient models, while harder tasks can be sent to specialist or frontier models when needed. discode also explains which model was chosen and why, keeping routing transparent instead of turning it into a black box. Its Turntables let users weigh what matters most, such as smarter output, faster answers, or better eco impact, while Smart Prompting quietly optimizes prompts in the background for different model families and domains. -
26
DeepSeek V3.1
DeepSeek
DeepSeek V3.1 is a groundbreaking open-weight large language model featuring a massive 685-billion parameters and an extended 128,000‑token context window, enabling it to process documents equivalent to 400-page books in a single prompt. It delivers integrated capabilities for chat, reasoning, and code generation within a unified hybrid architecture, seamlessly blending these functions into one coherent model. V3.1 supports a variety of tensor formats to give developers flexibility in optimizing performance across different hardware. Early benchmark results show robust performance, including a 71.6% score on the Aider coding benchmark, putting it on par with or ahead of systems like Claude Opus 4 and doing so at a far lower cost. Made available under an open source license on Hugging Face with minimal fanfare, DeepSeek V3.1 is poised to reshape access to high-performance AI, challenging traditional proprietary models.Starting Price: Free -
27
PromptKnit
PromptKnit
Professional prompt editors with GPT-4o, Claude 3 Opus, Gemini-1.5, and more models, function call simulation and more. Setup projects for different use cases with project members and settings. Different access control levels for each member, share and collaborate on prompts together. Multiple image inputs in each user message and individual detail parameter control. Easy to manipulate each message, function call schema editor and simulation of function call returns. Inline variables in your prompt, run and compare results with different variable groups simoutaniously. All sensitive data is encrypted using RSA-OAEP and AES-256-GCM in both transmission and storage. You never lose any edits on Knit, all edit history is saved and can be restored. Knit supports different kinds of models, including OpenAI, Claude, Azure OpenAI. And we are planning for supporting more. Nearly all API parameters can be set in the prompt editors. Find the best parameters for your prompts.Starting Price: $7 per month -
28
OrcaRouter
OrcaRouter
OrcaRouter is an OpenAI-compatible AI model router that sends each prompt to the right model across OpenAI, Anthropic, Gemini, DeepSeek, Qwen, Kimi, and 200+ frontier and open source models. It is built to preserve frontier answer quality while reducing AI inference spend by grading every prompt and routing hard reasoning to frontier models and routine work to lower-cost open-source models. The routing is quality-graded, never a blind, cheap-model swap, and each request shows the difficulty grade, selected model, provider, and cost so routes are visible, auditable, and reproducible. Developers can switch by changing the API base URL, while existing SDKs, model names, and streaming behavior continue to work as before. OrcaRouter supports automatic failover, so if a provider goes down mid-stream, traffic can switch transparently, and the application avoids user-facing errors. It also includes API key management with spend caps, model allowlists, rate limits, budget enforcement, and more.Starting Price: $29 per month -
29
Vello AI
Vello AI
Vello is the best way to work with AI, lightning fast, powerful, stackable, multi‑player AI chat that brings all the top models and human collaborators into one place. It supports web, mobile, and desktop, offering a fast, keyboard‑centric local experience. Vello combines models from OpenAI, Anthropic, Google, Facebook, Cohere, plus its own in‑house web and document models, enabling real‑time research with source quotes and citation, seamless document drafting, editing, and code iteration. Team spaces merge human and AI collaboration, allowing users to work side‑by‑side in shared spaces and chat rooms to execute tasks in real time. Users can create multiple AI personas, train them with files and documents (PDF, DOCX, code, CSV), and deploy them individually or in multi‑persona chat rooms, producing multi‑faceted workflows via round‑robin model responses.Starting Price: $17 per month -
30
CotranslatorAI
Korean Consulting & Translation Service
CotranslatorAI is a third-party Windows program enabling communication with OpenAI GPT models directly without using a web browser. To speed up your work, the program can process text selected in any application with OpenAI GPT using keyboard shortcuts, e.g. obtain AI response on the selected text using your instructions or even replace it with the AI response automatically. It also offers an unlimited, reusable prompt library which you can customize based on your workflows. CotranslatorAI lets you choose between current GPT models and control other setting. Originally designed for language experts, CotranslatorAI is suitable for academics, administrators, business managers, educationalists, journalists, lawyers, etc., since users are encouraged to create their own prompts, in addition to the basic prompt library bundled with it. CotranslatorAI communicates DIRECTLY with OpenAI’s APIs. It does not employ intermediary servers, thus ensuring your privacy and minimizing downtime.Starting Price: Free version -
31
Claude Opus 4.5
Anthropic
Claude Opus 4.5 is Anthropic’s newest flagship model, delivering major improvements in reasoning, coding, agentic workflows, and real-world problem solving. It outperforms previous models and leading competitors on benchmarks such as SWE-bench, multilingual coding tests, and advanced agent evaluations. Opus 4.5 also introduces stronger safety features, including significantly higher resistance to prompt injection and improved alignment across sensitive tasks. Developers gain new controls through the Claude API—like effort parameters, context compaction, and advanced tool use—allowing for more efficient, longer-running agentic workflows. Product updates across Claude, Claude Code, the Chrome extension, and Excel integrations expand how users interact with the model for software engineering, research, and everyday productivity. Overall, Claude Opus 4.5 marks a substantial step forward in capability, reliability, and usability for developers, enterprises, and end users. -
32
Arena.ai
Arena.ai
Arena is a community-powered platform designed to evaluate AI models based on real-world usage and feedback. Created by researchers from UC Berkeley, it enables users to test and compare frontier AI models across various tasks. The platform gathers insights from millions of builders, researchers, and creative professionals to generate transparent performance rankings. Arena’s public leaderboard reflects how models perform in practical scenarios rather than controlled benchmarks. Users can compare models side by side and provide feedback that helps shape future AI development. It supports a wide range of use cases, including text generation, coding, image creation, and video production. By leveraging collective input, Arena advances the understanding and improvement of AI technologies.Starting Price: Free -
33
SillyTavern
SillyTavern
SillyTavern is a free, open-source AI chat platform that allows users to create and interact with AI-generated characters, making it ideal for role-playing, storytelling, and fan fiction. As a locally installed user interface, it connects to various large language models like OpenAI, KoboldAI, and Claude, providing a customizable and immersive experience. Users can engage in individual or group chats, craft prompts to steer conversations, and utilize features like chat bookmarks and a customizable user interface. SillyTavern supports extensions and is compatible many devices. While the software is free, users need to connect it to an AI model backend, which may involve additional costs depending on the chosen model. Add bookmarks to any point in a chat to easily hop back in for reading or to start the chat back up in a new direction.Starting Price: Free -
34
PromptSignal
PromptSignal
PromptSignal is an AI visibility analytics platform that monitors how major large language models like ChatGPT, Claude, Perplexity, and Gemini mention, rank, and describe brands. As consumers increasingly rely on AI assistants instead of search engines to research, compare, and evaluate products, PromptSignal helps companies understand and optimize how their brand appears in AI-generated answers. The platform provides daily monitoring across multiple models, offering visibility scores, ranking positions, sentiment analysis, and competitive benchmarks. It includes tailored prompt suggestions to test brand performance and actionable recommendations to improve positioning and perception in LLM responses. Metrics such as brand visibility, competitor tracking, sentiment score, ranking position, and prompt performance allow teams to track where their brand is winning or falling behind.Starting Price: $99 per month -
35
Ninja AI
NinjaTech AI
Ninja AI combines the best AI agents and models in the world under one affordable, monthly subscription. Ninja can help you accomplish more everyday, including, research, writing, file analysis, image generation, code generation, and meeting scheduling. Get access to the best AI models from Meta, OpenAI, Anthropic, Google, and more. Easily choose the models you want to use for each tasks, and easily compare answers across AI models. Plans with unlimited tasks starting from as low as $5/month.Starting Price: $5/month -
36
DeepEval
Confident AI
DeepEval is a simple-to-use, open source LLM evaluation framework, for evaluating and testing large-language model systems. It is similar to Pytest but specialized for unit testing LLM outputs. DeepEval incorporates the latest research to evaluate LLM outputs based on metrics such as G-Eval, hallucination, answer relevancy, RAGAS, etc., which uses LLMs and various other NLP models that run locally on your machine for evaluation. Whether your application is implemented via RAG or fine-tuning, LangChain, or LlamaIndex, DeepEval has you covered. With it, you can easily determine the optimal hyperparameters to improve your RAG pipeline, prevent prompt drifting, or even transition from OpenAI to hosting your own Llama2 with confidence. The framework supports synthetic dataset generation with advanced evolution techniques and integrates seamlessly with popular frameworks, allowing for efficient benchmarking and optimization of LLM systems.Starting Price: Free -
37
OpenPipe
OpenPipe
OpenPipe provides fine-tuning for developers. Keep your datasets, models, and evaluations all in one place. Train new models with the click of a button. Automatically record LLM requests and responses. Create datasets from your captured data. Train multiple base models on the same dataset. We serve your model on our managed endpoints that scale to millions of requests. Write evaluations and compare model outputs side by side. Change a couple of lines of code, and you're good to go. Simply replace your Python or Javascript OpenAI SDK and add an OpenPipe API key. Make your data searchable with custom tags. Small specialized models cost much less to run than large multipurpose LLMs. Replace prompts with models in minutes, not weeks. Fine-tuned Mistral and Llama 2 models consistently outperform GPT-4-1106-Turbo, at a fraction of the cost. We're open-source, and so are many of the base models we use. Own your own weights when you fine-tune Mistral and Llama 2, and download them at any time.Starting Price: $1.20 per 1M tokens -
38
GradientJ
GradientJ
GradientJ provides everything you need to build large language model applications in minutes and manage them forever. Discover and maintain the best prompts by saving versions and comparing them across benchmark examples. Orchestrate and manage complex applications by chaining prompts and knowledge bases into complex APIs. Enhance the accuracy of your models by integrating them with your proprietary data. -
39
Spanlens
Spanlens
Spanlens is an open-source (MIT) LLM observability platform that lets developers monitor every call their application makes to OpenAI, Anthropic, Gemini, Mistral, OpenRouter, Azure OpenAI, or a local Ollama model. Integration takes one line: swap your client's baseURL to the Spanlens proxy, or run "npx @spanlens/cli init" and the wizard rewrites your code automatically. From that moment, every request is recorded with its model, token counts, latency, cost, and full prompt and response body, with streaming responses reconstructed automatically. The dashboard turns that raw log into operational insight. Cost tracking breaks spend down per request, per model, and per end user, and parses prompt-cache tokens separately so you see real cache savings rather than sticker price. Agent tracing visualizes multi-step workflows as Gantt waterfalls and node-and-edge graphs, highlighting the critical path so you can find the slowest dependency chain in a fan-out. -
40
PromptHub
PromptHub
Test, collaborate, version, and deploy prompts, from a single place, with PromptHub. Put an end to continuous copy and pasting and utilize variables to simplify prompt creation. Say goodbye to spreadsheets, and easily compare outputs side-by-side when tweaking prompts. Bring your datasets and test prompts at scale with batch testing. Make sure your prompts are consistent by testing with different models, variables, and parameters. Stream two conversations and test different models, system messages, or chat templates. Commit prompts, create branches, and collaborate seamlessly. We detect prompt changes, so you can focus on outputs. Review changes as a team, approve new versions, and keep everyone on the same page. Easily monitor requests, costs, and latencies. PromptHub makes it easy to test, version, and collaborate on prompts with your team. Our GitHub-style versioning and collaboration makes it easy to iterate your prompts with your team, and store them in one place. -
41
Dify
Dify
Dify is an open-source platform designed to streamline the development and operation of generative AI applications. It offers a comprehensive suite of tools, including an intuitive orchestration studio for visual workflow design, a Prompt IDE for prompt testing and refinement, and enterprise-level LLMOps capabilities for monitoring and optimizing large language models. Dify supports integration with various LLMs, such as OpenAI's GPT series and open-source models like Llama, providing flexibility for developers to select models that best fit their needs. Additionally, its Backend-as-a-Service (BaaS) features enable seamless incorporation of AI functionalities into existing enterprise systems, facilitating the creation of AI-powered chatbots, document summarization tools, and virtual assistants. -
42
Tülu 3
Ai2
Tülu 3 is an advanced instruction-following language model developed by the Allen Institute for AI (Ai2), designed to enhance capabilities in areas such as knowledge, reasoning, mathematics, coding, and safety. Built upon the Llama 3 Base, Tülu 3 employs a comprehensive four-stage post-training process: meticulous prompt curation and synthesis, supervised fine-tuning on a diverse set of prompts and completions, preference tuning using both off- and on-policy data, and a novel reinforcement learning approach to bolster specific skills with verifiable rewards. This open-source model distinguishes itself by providing full transparency, including access to training data, code, and evaluation tools, thereby closing the performance gap between open and proprietary fine-tuning methods. Evaluations indicate that Tülu 3 outperforms other open-weight models of similar size, such as Llama 3.1-Instruct and Qwen2.5-Instruct, across various benchmarks.Starting Price: Free -
43
Qwen3-Coder
Qwen
Qwen3‑Coder is an agentic code model available in multiple sizes, led by the 480B‑parameter Mixture‑of‑Experts variant (35B active) that natively supports 256K‑token contexts (extendable to 1M) and achieves state‑of‑the‑art results comparable to Claude Sonnet 4. Pre‑training on 7.5T tokens (70 % code) and synthetic data cleaned via Qwen2.5‑Coder optimized both coding proficiency and general abilities, while post‑training employs large‑scale, execution‑driven reinforcement learning, scaling test‑case generation for diverse coding challenges, and long‑horizon RL across 20,000 parallel environments to excel on multi‑turn software‑engineering benchmarks like SWE‑Bench Verified without test‑time scaling. Alongside the model, the open source Qwen Code CLI (forked from Gemini Code) unleashes Qwen3‑Coder in agentic workflows with customized prompts, function calling protocols, and seamless integration with Node.js, OpenAI SDKs, and environment variables.Starting Price: Free -
44
Qwen Code
Qwen
Qwen3‑Coder is an agentic code model available in multiple sizes, led by the 480B‑parameter Mixture‑of‑Experts variant (35B active) that natively supports 256K‑token contexts (extendable to 1M) and achieves state‑of‑the‑art results on Agentic Coding, Browser‑Use, and Tool‑Use tasks comparable to Claude Sonnet 4. Pre‑training on 7.5T tokens (70 % code) and synthetic data cleaned via Qwen2.5‑Coder optimized both coding proficiency and general abilities, while post‑training employs large‑scale, execution‑driven reinforcement learning and long‑horizon RL across 20,000 parallel environments to excel on multi‑turn software‑engineering benchmarks like SWE‑Bench Verified without test‑time scaling. Alongside the model, the open source Qwen Code CLI (forked from Gemini Code) unleashes Qwen3‑Coder in agentic workflows with customized prompts, function calling protocols, and seamless integration with Node.js, OpenAI SDKs, and more.Starting Price: Free -
45
EXAONE Deep
LG
EXAONE Deep is a series of reasoning-enhanced language models developed by LG AI Research, featuring parameter sizes of 2.4 billion, 7.8 billion, and 32 billion. These models demonstrate superior capabilities in various reasoning tasks, including math and coding benchmarks. Notably, EXAONE Deep 2.4B outperforms other models of comparable size, EXAONE Deep 7.8B surpasses both open-weight models of similar scale and the proprietary reasoning model OpenAI o1-mini, and EXAONE Deep 32B shows competitive performance against leading open-weight models. The repository provides comprehensive documentation covering performance evaluations, quickstart guides for using EXAONE Deep models with Transformers, explanations of quantized EXAONE Deep weights in AWQ and GGUF formats, and instructions for running EXAONE Deep models locally using frameworks like llama.cpp and Ollama.Starting Price: Free -
46
Entry Point AI
Entry Point AI
Entry Point AI is the modern AI optimization platform for proprietary and open source language models. Manage prompts, fine-tunes, and evals all in one place. When you reach the limits of prompt engineering, it’s time to fine-tune a model, and we make it easy. Fine-tuning is showing a model how to behave, not telling. It works together with prompt engineering and retrieval-augmented generation (RAG) to leverage the full potential of AI models. Fine-tuning can help you to get better quality from your prompts. Think of it like an upgrade to few-shot learning that bakes the examples into the model itself. For simpler tasks, you can train a lighter model to perform at or above the level of a higher-quality model, greatly reducing latency and cost. Train your model not to respond in certain ways to users, for safety, to protect your brand, and to get the formatting right. Cover edge cases and steer model behavior by adding examples to your dataset.Starting Price: $49 per month -
47
Prompt Selected
Prompt Selected
Prompt Selected is an AI-powered browser extension that allows users to run custom ChatGPT prompts on any selected text, requiring their own OpenAI API key for functionality (BYOK). With unlimited prompts, prebuilt examples, and GPT model support, it simplifies grammar corrections, translations, and text summaries. The tool ensures data security with local key storage and zero tracking. Take control of your AI needs with one powerful, customizable extension.Starting Price: Free -
48
Mnemosphere
Mnemosphere AI
Mnemosphere is an AI workspace built for people who want to do more than chat. Unlike traditional AI tools, it combines multiple models side-by-side, parallel prompting, instant answer critique, mindmaps, thread notes, conversation indexing, and chat with web pages or YouTube videos in one place. This helps users compare perspectives, research faster, capture important ideas, and turn long conversations into structured thinking. Mnemosphere is especially valuable for power users, researchers, writers, developers, and teams who want deeper insight, better decisions, and a more productive AI workflow than single-model chat platforms can offer.Starting Price: $17/month -
49
Talkory.ai
Talkory.ai
Talkory.ai helps users stop tab-switching between AI tools by sending one question to five models at once and turning the results into one answer they can trust. From a single prompt, Talkory sends the query to GPT, Claude, Gemini, Perplexity Sonar, and Grok simultaneously, then shows where the models agree, where they differ, and which response performed best. Instead of manually copying the same question into different tools and synthesizing the answers by hand, users get all five responses side by side in seconds, ranked by quality, completeness, and clarity. Talkory generates a Consensus Answer, which combines and ranks all LLM responses into one authoritative, high-confidence result, and a Common Answer, which highlights the specific points and ideas that appeared consistently across all models. Its Recursive Correction feature asks each model to review, correct, and refine its own first response, producing a sharper second round automatically.Starting Price: $5 per month -
50
Molmo 2
Ai2
Molmo 2 is a new suite of state-of-the-art open vision-language models with fully open weights, training data, and training code that extends the original Molmo family’s grounded image understanding to video and multi-image inputs, enabling advanced video understanding, pointing, tracking, dense captioning, and question-answering capabilities; all with strong spatial and temporal reasoning across frames. Molmo 2 includes three variants: an 8 billion-parameter model optimized for overall video grounding and QA, a 4 billion-parameter version designed for efficiency, and a 7 billion-parameter Olmo-backed model offering a fully open end-to-end architecture including the underlying language model. These models outperform earlier Molmo versions on core benchmarks and set new open-model high-water marks for image and video understanding tasks, often competing with substantially larger proprietary systems while training on a fraction of the data used by comparable closed models.
