TL;DR — Switch in Under 10 Minutes
- Drop the cohere-ai SDK — use the OpenAI SDK
- 200+ models on one key
OpenAI's most capable multimodal model. Excellent for complex reasoning, coding, and creative tasks.
Why Move Off Cohere?
Cohere has strong enterprise-grade embeddings, reranking, and Command R+ for RAG workloads. The trade-offs are limited frontier-model variety and a proprietary SDK that does not play well with OpenAI-shaped codebases.
Step 1 — Get a Railwail API Key
Sign up at railwail.com and generate a key.
API Endpoint Mapping
Why Railwail Over Cohere
- OpenAI-compatible API — drop the cohere-ai SDK
- Plus Claude, GPT-4o, Gemini for cross-provider RAG experiments
FAQ
What about Cohere's RAG with citations?
Cohere's stateful chat (conversation_id, connectors, documents in chat call) is proprietary. Railwail supports the stateless OpenAI Chat Completions schema — pass retrieved documents in the system or user message yourself.
Will my Cohere tool-use prompts work?
Tool calls in the response come back as tool_calls per OpenAI convention.
Next Steps
- Sign up at railwail.com
- Generate an API key
- Drop cohere-ai and use the OpenAI SDK
- Read the reference at railwail.com/docs
- Compare pricing at railwail.com/pricing
Models in this article
Live prices from Railwail's current rules, October 7, 2026.
≈ billed by actual tokens or GPU time
Next step
Try GPT-4o on Railwail
Sign in with Google for 10 free credits (usable 24 hours after sign-up, runs up to 2 credits), or top up from $5.00. Unused balance does not expire.
