Use case
Claude Sonnet 4.6 messages
messages notes for claude-sonnet-4-6: the rate card, a worked volume, and when to send this ID. A sample of 1 million input tokens plus 200 thousand output tokens is about $1.20 on corouter (input $0.600, output $0.600).
Messages shape
A familiar JSON shape carries model and messages. Set model to claude-sonnet-4-6. This is an Anthropic model ID, not an OpenAI model ID.
Claude Sonnet 4.6 (claude-sonnet-4-6) lists at $3.00 input and $15.00 output per million tokens. corouter bills $0.600 input and $3.00 output. Context is 1M.
Where this Claude ID sits
Claude Sonnet 4.6 keeps the previous Sonnet list rate, above Sonnet 5, with a 1M window and the Code tag. Send claude-sonnet-4-6 when a runbook still names it.
A sample of 1 million input tokens plus 200 thousand output tokens is about $1.20 on corouter (input $0.600, output $0.600).
Questions
- Which model ID should the request send?
- Send claude-sonnet-4-6. Do not put a different name in the model field.
- What is the minimum top-up?
- Prepaid credits, $5 minimum top-up, no subscription tier.

