Gemini 3.1 Pro Preview Custom Tools pricing & benchmarks
Released Feb 25, 2026 · served by 1 provider
What Gemini 3.1 Pro Preview Custom Tools is
Gemini 3.1 Pro Preview Custom Tools is a variant of Gemini 3.1 Pro that improves tool selection behavior by preventing overuse of a general bash tool when more efficient third-party...
- Model ID:
google/gemini-3.1-pro-preview-customtools - Modality: text+image+file+audio+video->text
- Tool calling: supported · Structured output: supported
Providers and prices for Gemini 3.1 Pro Preview Custom Tools
The same model costs different amounts depending on who serves it. Prices are per 1M tokens, cheapest first. Uptime and throughput are OpenRouter's rolling measurements, not vendor claims.
| Provider | Input | Output | Context | Quant | Uptime 24h | Throughput |
|---|---|---|---|---|---|---|
| Google AI Studiocheapest | $2.00 | $12.00 | 1.0M | — | 99.7% | — |
FAQ
How much does the Gemini 3.1 Pro Preview Custom Tools API cost?
$2.00 per 1M input tokens and $12.00 per 1M output tokens. A typical workload of 1M input + 300K output tokens costs about $5.60.
Is Gemini 3.1 Pro Preview Custom Tools free?
No. It is a paid model starting at $2.00 per 1M input tokens, though some providers offer trial credits.
Which provider is cheapest for Gemini 3.1 Pro Preview Custom Tools?
Google AI Studio at $2.00 input / $12.00 output per 1M tokens.
Can I self-host Gemini 3.1 Pro Preview Custom Tools?
No. Gemini 3.1 Pro Preview Custom Tools is closed-weight and only available through hosted APIs.