Model pricing
claude-opus-5
Claude lane (Anthropic protocol)
Opus is the flagship tier of the Claude family: the deepest reasoning, for architecture-scale refactors, cross-file understanding, and stubborn problems. It carries the family's highest rates — worth it for the heavy work.
How billing works
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How to connect
One key, both protocols: Claude models take the ANTHROPIC_BASE_URL and ANTHROPIC_AUTH_TOKEN environment variables; GPT models just need the base_url in the OpenAI SDK.