Claude Opus 4.1: price, context window and licence
| Input | $15 per million tokens |
|---|---|
| Output | $75 per million tokens |
| Cached input | $1.50 per million tokens |
| Cache write | $18.75 per million tokens |
| Context window | 200K tokens |
| Licence | |
| Vendor | Anthropic |
Where these figures come from
Taken from the OpenRouter model registry, which lists what providers charge per token, and converted to a per-million rate. Checked 30 Oct 2026. Where OpenRouter publishes no cache-read rate, the cell above is blank rather than inferred.