Claude Opus 5 5 20260921 on OpenRouter

Provider model ID: anthropic/claude-opus-5.5-20260921
Protocol: openai chat completions
Region: global
Status: active
Base URL: https://openrouter.ai/api/v1

Current offers

Price components

Exact source values; no hidden currency conversion or inferred effort surcharge.

No current source-backed offers

This endpoint exists, but no current offer has been published in the price registry.

Provider assertions

Claims

No compatibility claims imported

Provider assertions appear after compatible source evidence is normalized.

Independent checks

Observations

independent observations · probes begin in Stage 2

Independent inference performance

Scenario and region observations

Full JSON history

No independent aggregates match these filters yet. Raw scheduled probes remain visible only after the first immutable aggregate snapshot is published.

Immutable record

Pricing history

Newest observed values first.

No immutable price observations have been recorded for this endpoint.