GGoogle · Released Feb 25, 2026
Gemini 3.1 Pro Preview Custom Tools
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...
- Top 35%SWE-bench Verified
- Released
- Feb 25 2026
- Context window
- 1M 66K out
- Input / 1M tokens
- $2.00
- Output / 1M tokens
- $12.00
Where to run it
12 providers compared
Cheapest: Google AI Studio, NanoGPT, Kilo Gateway +7 more at $2.00 / $12.00 per 1M input / output tokens — 40% less than the priciest option.
| Provider | Input | Output | Cache read | Context | Max output | Uptime | vs. best |
|---|---|---|---|---|---|---|---|
| Google AI Studio | $2.00 | $12.00 | $0.20 | 1M | 66K | 100%24h | Cheapest |
| NanoGPT | $2.00 | $12.00 | $0.20 | 1M | 66K | — | Cheapest |
| Kilo Gateway | $2.00 | $12.00 | $0.20 | 1M | 66K | — | Cheapest |
| AIHubMix | $2.00 | $12.00 | $0.20 | 1M | 66K | — | Cheapest |
| Vertex | $2.00 | $12.00 | $0.20 | 1M | 66K | — | Cheapest |
| $2.00 | $12.00 | $0.20 | 1M | 66K | — | Cheapest | |
| Neon | $2.00 | $12.00 | $0.20 | 1M | 66K | — | Cheapest |
| Tempr Gateway | $2.00 | $12.00 | $0.20 | 1M | 66K | — | Cheapest |
| Merge Gateway | $2.00 | $12.00 | $0.20 | 1M | 66K | — | Cheapest |
| Eden AI | $2.00 | $12.00 | $0.20 | 1M | 66K | — | Cheapest |
| AI/ML API | $2.75 | $16.50 | $0.28 | 1.05M | 66K | — | +38% |
| OrcaRouter | $4.00 | $18.00 | $0.40 | 1M | 66K | — | +67% |
Value
Price vs. performance
Gemini 3.1 Pro Preview Custom Tools Other Google Other labs Value frontier · SWE-bench Verified vs. input price per 1M tokens (log scale) · Drag to pan, pinch or Ctrl + scroll to zoom, double-click to zoom in.
Benchmarks
2 benchmark scores
| Benchmark | Score | Rank | Leader |
|---|---|---|---|
| SWE-bench VerifiedSoftware engineering · Real GitHub issues fixed in Python repos | 75.6% | #11of 32 | Claude Opus 4.783.5% |
| Vending-Bench 2Agents & computer use · Run a simulated vending business for a year (final balance) | $3,774 | #37of 61 | GPT-6 Astra$15,515 |
Specs
Details
- Model ID
google/gemini-3.1-pro-preview-customtools- Developer
- Release date
- Feb 25, 2026 ·
- Context window
- 1,048,576 tokens
- Max output
- 65,536 tokens
- API price
- $2.00 / $12.00 per 1M input / output tokens
- Providers
- 12
- Input types
- text, audio, image, video, file
- Reasoning
- Yes
- Tool calling
- Yes
- Open weights
- No
- Free tier
- No
Release date and prices from OpenRouter's catalog; providers from OpenRouter and models.dev. Buying directly from a provider can cost a little differently. Speed, latency and uptime are measured on OpenRouter only; uptime is the share of OpenRouter requests each provider served over the last day. Benchmark scores are the best result per benchmark from Epoch AI, licensed CC BY 4.0. Rank counts every model tracked here with a score.