Free APILLMAPI keyOfficial
Cohere API (Trial key)
Free trial keys for chat, embed, and rerank; great for RAG prototypes
Cohere's API specializes in enterprise RAG: the Command chat models, Embed for vectors, and the strong Rerank models. A free Trial key (no card) lets you call all endpoints for development and testing, sharing one monthly call budget. Production use requires a paid Production key.
Free tier
Free Trial key, no credit card. Capped at 1,000 API calls per month across all endpoints combined; trial usage is not permitted for production or commercial use.Rate limits
Trial per-endpoint per-minute caps (verified June 2026): Chat 20/min, Rerank 10/min, Embed 2,000 inputs/min. Hard monthly ceiling of 1,000 calls total across endpoints.Auth
API keyBase URL
https://api.cohere.com/v2What you'd build with it
- Prototype a RAG pipeline using Rerank to boost retrieval relevance for free
- Generate embeddings for a small vector index before paying
- Test grounded chat with citations for a knowledge-base assistant
- Evaluate Command vs other models on a real task within the trial budget
Key endpoints
- POST
/chatChat with Command models, tools and RAG citations supported - POST
/embedGenerate text or image embeddings (Embed v3/v4) - POST
/rerankRe-rank documents against a query for RAG relevance
Members
Members get the runnable recipe
Sign in free to copy the example request, see a sample response, and read the gotchas.
Tags
llmrerankembeddingsraginference