AI Desk · Model IdentityWithdrawn
Anthropic: Claude Opus 4.7 (Fast) no longer appears in the OpenRouter catalogue. The record stays here because the measurements below were real when they were taken and this address has been published. A model leaving is the kind of change this product exists to notice, so it is kept rather than deleted.
| Signal | Result | Reference |
|---|---|---|
| Tokenizer signature | Not measured | – |
| API surface | Identical contract to 1 other entry | api_b57d98be |
| Context and output | 1,000,000 context · 128,000 max output | declared |
| Reasoning contract | Optional · efforts max, xhigh, high, medium, low · default high | declared |
| Serving providers observed | None recorded yet | – |
Fast-mode variant of [Opus 4.7](/anthropic/claude-opus-4.7) - identical capabilities with higher output speed at premium 6x pricing. Learn more in Anthropic's docs: https://platform.claude.com/docs/en/build-with-claude/fast-mode
Supported parameters
include_reasoningmax_tokensreasoningreasoning_effortresponse_formatstopstructured_outputstool_choicetoolsverbosity
defaults: {"temperature":null,"top_p":null,"top_k":null,"frequency_penalty":null,"presence_penalty":null,"repetition_penalty":null}
Cite this page as the evidence record for Anthropic: Claude Opus 4.7 (Fast): the URL is stable, measurements are dated, and revisions append to the history above. Method: tokenizer fingerprinting, v1, 50 strings.
