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Anthropic

Claude Opus 5

The newest experimental Opus, in limited availability.

Claude on AnyModel runs through the official Anthropic API and through AWS. The model weights are the same as in claude.ai. Answers can differ because the Claude app adds its own system prompt, tools and extended thinking to every request. Through the API the model receives only your request. More in the FAQ

Claude Opus 5 is Anthropic's newest experimental flagship for sustained coding, multi-file work, multi-agent coordination and precise code review. AnyModel serves it only on capacity where live inference has been verified.

Best for

Hardest coding tasksMulti-agent workCode review

Strengths

  • ▸Newest Opus
  • ▸Agentic coding
  • ▸Adaptive effort up to max

Use Claude Opus 5 via AnyModel

One OpenAI-compatible endpoint — just set the model id:

curl https://anymodel.org/v1/chat/completions \
  -H "Authorization: Bearer $ANYMODEL_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-opus-5",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'
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