gemini-3.1-pro-preview-customtools API Pricing
gemini-3.1-pro-preview-customtools on Google Gemini API costs $2.00 per 1M input tokens and $12.00 per 1M output tokens (as of ).
| Input | $2.00 / 1M tokens |
|---|---|
| Output | $12.00 / 1M tokens |
| Cached input (read) | $0.20 |
| Cache write | — |
| Batch input / output | $1.00 / $6.00 |
| Above 200K tokens (input / output) | $4.00 / $18.00 |
| Context window | 1.04858M tokens |
| Max output | 66K tokens |
| Supports | vision, tool calling, reasoning, prompt caching |
| Deprecation date | None listed |
| API model id | gemini-3.1-pro-preview-customtools |
| In our records since |
What it costs for common jobs
Estimated from the list price above (no caching or batch discount).
| Job | Estimated cost |
|---|---|
| 1,000 chat replies (2,000 tokens in, 500 out each) | $10.00 |
| Summarising 100 long documents (50,000 in, 1,000 out each) | $11.20 |
| 1 million classification calls (300 in, 5 out each) | $660.00 |
Try your own numbers in the LLM API cost calculator.
Price history
No price change recorded since .
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