AI Gateway Docs
API Reference

Messages

POST /v1/messages — Anthropic-compatible messages endpoint

POST /v1/messages
x-api-key: $BRAND_API_KEY
Content-Type: application/json
anthropic-version: 2023-06-01

Example

curl https://api.example.com/v1/messages \
  -H "x-api-key: $BRAND_API_KEY" \
  -H "anthropic-version: 2023-06-01" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-3-5-sonnet-20241022",
    "max_tokens": 1024,
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Chat Completions

POST /v1/chat/completions — OpenAI-compatible chat completion endpoint

Models

Supported models and per-token pricing on AI Gateway

On this page

Example