Model pricing
claude-sonnet-5
Claude lane (Anthropic protocol)
Sonnet is the balanced tier: enough for almost all everyday engineering, trading depth for speed. It's the daily driver for Claude Code.
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.