Gemini 3.1 Pro Preview Custom Tools: price, context window and licence
| Input | $2 per million tokens |
|---|---|
| Output | $12 per million tokens |
| Cached input | $0.20 per million tokens |
| Cache write | $0.38 per million tokens |
| Context window | 1.048576M tokens |
| Licence | |
| Vendor |
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.