# Gemini 3.1 Pro Preview Custom Tools API prices

Gemini 3.1 Pro Preview Custom Tools (gemini-pro) — 1.0M context, 66k max output.
11 metered per-token offers from 11 provider(s), in USD per 1M tokens.

| Provider | Input $/1M | Output $/1M | Cache read $/1M | Context |
| --- | --- | --- | --- | --- |
| AIHubMix | $2 | $12 | $0.2 | 1.0M |
| Databricks | $2 | $12 | $0.2 | 1.0M |
| Eden AI | $2 | $12 | $0.2 | 1.0M |
| Google | $2 | $12 | $0.2 | 1.0M |
| Vertex | $2 | $12 | $0.2 | 1.0M |
| Kilo Gateway | $2 | $12 | $0.2 | 1.0M |
| Merge Gateway | $2 | $12 | $0.2 | 1.0M |
| NanoGPT | $2 | $12 | $0.2 | 1.0M |
| Neon | $2 | $12 | $0.2 | 1.0M |
| OpenRouter | $2 | $12 | $0.2 | 1.0M |
| OrcaRouter | $2 | $12 | $0.2 | 1.0M |

## Summary

- Cheapest input: $2 per 1M tokens (AIHubMix)
- Cheapest output: $12 per 1M tokens (AIHubMix)
- First-party: $12 per 1M output tokens (Google)
- Free offers: none
- Subscription plans (not per-token): none
- Released: 2026-02-19
- Inputs: audio, image, pdf, text, video

HTML page: https://llmprice.gitlab.io/models/gemini-3-1-pro-preview-custom-tools/
Full dataset: https://llmprice.gitlab.io/data/catalog.json