Free LLM APIs
Every API here is free outright or has a free tier. Limits differ a lot, so check the free tier column before you build on one.
| API | Pricing | Auth | Format | Free tier | Status |
|---|---|---|---|---|---|
CohereChat, embeddings and rerank models for building search, RAG and conversational AI features. AI & Machine Learning › LLMs | Freemium | API key | JSON | <100/day | Live |
Google GeminiGoogle's multimodal generative AI: text, image and code generation via Gemini models. AI & Machine Learning › LLMs | Freemium | API key | JSON | — | Live |
GroqOpenAI-compatible chat, speech-to-text and text-to-speech on open-weight models such as GPT-OSS and Whisper AI & Machine Learning › LLMs | Freemium | API key | JSON | — | Live |
HarnessRouterRuns managed coding-agent harnesses (Codex, Claude Code, Hermes) behind one API, billed per work-minute. AI & Machine Learning › LLMs | Freemium | API key | JSON | — | Untested |
Hugging Face Inference ProvidersOne key, one API routing chat, image, speech and embedding calls to 200+ models across providers. AI & Machine Learning › LLMs | Freemium | API key | JSON | — | Live |
MindsGenerates AI-simulated survey/interview responses from described audiences for market research. AI & Machine Learning › LLMs | Freemium | API key | JSON | — | Live |
Mistral AIMistral's chat, coding, OCR and Voxtral speech models, plus embeddings, with a no-card free mode for testing AI & Machine Learning › LLMs | Freemium | API key | JSON | — | Live |
OpenRouterOne OpenAI-compatible endpoint for 500+ models from many labs, with provider fallback and free models AI & Machine Learning › LLMs | Freemium | API key | JSON | <100/day | Live |
statlyteCurrent prices, context windows, and API IDs for 168 LLM models across 13 providers. AI & Machine Learning › LLMs | Freemium | None | JSON | 1k–10k/day | Live |
UnoRouterOpenAI-compatible gateway routing one API key across 200+ AI models from many providers. AI & Machine Learning › LLMs | Freemium | API key | JSON | — | Live |
CohereFreemiumLive
Chat, embeddings and rerank models for building search, RAG and conversational AI features.
API key · JSON
<100/day
no machine-readable spec
Google GeminiFreemiumLive
Google's multimodal generative AI: text, image and code generation via Gemini models.
API key · JSON
—
no machine-readable spec
GroqFreemiumLive
OpenAI-compatible chat, speech-to-text and text-to-speech on open-weight models such as GPT-OSS and Whisper
API key · JSON
—
llms.txt
HarnessRouterFreemiumUntested
Runs managed coding-agent harnesses (Codex, Claude Code, Hermes) behind one API, billed per work-minute.
API key · JSON
—
no machine-readable spec
Hugging Face Inference ProvidersFreemiumLive
One key, one API routing chat, image, speech and embedding calls to 200+ models across providers.
API key · JSON
—
MCP server
MindsFreemiumLive
Generates AI-simulated survey/interview responses from described audiences for market research.
API key · JSON
—
OpenAPI spec · MCP server · llms.txt
Mistral AIFreemiumLive
Mistral's chat, coding, OCR and Voxtral speech models, plus embeddings, with a no-card free mode for testing
API key · JSON
—
OpenAPI spec
OpenRouterFreemiumLive
One OpenAI-compatible endpoint for 500+ models from many labs, with provider fallback and free models
API key · JSON
<100/day
OpenAPI spec
statlyteFreemiumLive
Current prices, context windows, and API IDs for 168 LLM models across 13 providers.
None · JSON
1k–10k/day
OpenAPI spec · llms.txt
UnoRouterFreemiumLive
OpenAI-compatible gateway routing one API key across 200+ AI models from many providers.
API key · JSON
—
MCP server · llms.txt
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