Provider documentation
| Provider | Official reference | What to check |
|---|---|---|
| OpenAI | Responses API and text generation | Current API guidance, tools, model selection |
| Anthropic | Claude Messages API | Message structure, token limits, tool use |
| Gemini generateContent API | Model capabilities, function calling, multimodal support | |
| Mistral | Chat completion API | Chat messages, streaming, response formats |
| Cohere | Chat API | Retrieval grounding, citations, chat inputs |
| OpenRouter | Developer Platform | Model routing, provider differences, common interface |
How we use references
ChatsAPI.com is an independent guide. We link directly to provider materials rather than copying their pricing tables or claiming official affiliation. APIs evolve; check the linked references before deploying production code.
Related reading
Editorial note: Provider capabilities, APIs and prices may change. Always verify details in the official references.
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