Gemini 3.1 Pro Preview Custom Tools
The cheapest provider for Gemini 3.1 Pro Preview Custom Tools is Google AI Studio at $4.50 per 1M tokens (blended), charging $2.00 per 1M input and $12 per 1M output tokens. It is served by a single provider. Context window: 1M tokens. Prices tracked since Oct 3, 2026.
Best price
$4.50
at Google AI Studio
Input / output
$2.00 / $12
per 1M tokens
Providers
1
no spread
7 days
—
best price
30 days
—
best price
Context
1M
tokens
Providers
Active offers ranked by blended price. Bars are relative to the most expensive.
| Provider | Input | Output | Blended | vs cheapest | Context | Uptime 1d | Price since |
|---|---|---|---|---|---|---|---|
Google AI StudioCheapest | $2.00 | $12 | $4.50 | best |
- Google AI StudioCheapest$4.50$2.00 in · $12 outbest1M ctx100% uptime
Blended = (3 × input + output) / 4.
Price history
Hover to compare providers at any point in time. Click a legend item to hide it.
USD per 1M tokens · each step is a price change
Not enough history yet
Tracking since Oct 3, 2026. The chart fills in as new crawls arrive every 6 hours.
Long-context pricing
Higher rates once the prompt passes a size threshold.
| Offered by | Prompt size | Input | Output |
|---|---|---|---|
| Google AI Studio | base | $2.00 | $12 |
| > 200K | $4.00 | $18 |
Other pricing
Cache, reasoning and per-call fees. Token rates per 1M; others per unit.
| Offered by | Cache read | Cache write | Reasoning | Per image | Web search |
|---|---|---|---|---|---|
| Google AI Studio | $0.20 | $0.375 | $12 | $0.000002 | $0.014 |
Change log
Every recorded change for this model since Oct 3, 2026.
No changes yet
Tracking since Oct 3, 2026. Price changes, new providers and delistings will show up here.
About this model
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...
- Released
- Feb 25, 2026
- First tracked
- Oct 3, 2026
- Canonical slug
- google/gemini-3.1-pro-preview-customtools-20260219