Google: Gemini 3.1 Pro Preview Custom Tools
GoogleGemini 3.1 Pro Preview Custom Tools is a variant of Gemini 3.1 Pro that improves tool selection behavior by preventing o
1M+ contextMultimodal visionAudio
TextVisionAudioVideo
Specifications
| Vendor | |
| Family | |
| Context | 1.0M · 786.6k words（≈ a novella） |
| Max output | 1.0M · 786.6k words（≈ a novella） |
| Released | 2026-06-19 |
| Open source | No |
| Tool use | ✓ |
Pricing across channels
per 1M tokens, USD
| Channel | Type | Input | Output | → |
|---|---|---|---|---|
| OpenRouter (auto) | Aggregator | $2.00 | $12.00 | visitAd |
OpenRouter API (auto-fetched)· 2026-06-19
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