Use Claude Opus 4.7 with native Anthropic API access

What is Claude Opus 4.7?

Claude Opus 4.7 is positioned for demanding reasoning, complex coding, long document analysis, and high-stakes agent workflows. For Claude-series models, Crazyrouter prioritizes native Anthropic protocol support so Claude clients and Messages API workloads can preserve expected behavior.

Claude Opus 4.7 API quickstart

Use the native Anthropic Messages API first. If your application is already built on OpenAI-compatible chat completions, use the compatibility endpoint as a migration fallback.

curl https://crazyrouter.com/v1/messages \
  -H "Content-Type: application/json" \
  -H "x-api-key: $CRAZYROUTER_API_KEY" \
  -H "anthropic-version: 2023-06-01" \
  -d '{
    "model": "claude-opus-4.7",
    "max_tokens": 2048,
    "messages": [
      {
        "role": "user",
        "content": "Analyze this architecture decision and suggest tradeoffs."
      }
    ],
    "stream": true
  }'

curl https://crazyrouter.com/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $CRAZYROUTER_API_KEY" \
  -d '{
    "model": "claude-opus-4.7",
    "messages": [
      {
        "role": "user",
        "content": "Analyze this architecture decision and suggest tradeoffs."
      }
    ],
    "stream": true
  }'

Best use cases

Works with developer tools

Claude Opus 4.7 FAQ