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Gemini 3.1 Pro Preview Customtools API price
google/gemini-3.1-pro-preview-customtools
The cheapest Gemini 3.1 Pro Preview Customtools API is $2.00/M input at OpenRouter (aggregator) - all 2 providers compared below, per 1M tokens.
FlagshipGoogle1.0M context2 sellers
Input
$2.00
per 1M tokens · OpenRouter (aggregator)
up to $4.00
Output
$12.00
per 1M tokens · OpenRouter (aggregator)
up to $18.00
Where to buy it
Cheapest Gemini 3.1 Pro Preview Customtools API providers compared - 2 sellers, from $2.00/M.
| Provider | Input $/M | Output $/M | Cached in |
|---|---|---|---|
| OpenRouter (aggregator) | 2.00cheapest | 12.00 | 0.200 |
| OrcaRouter (aggregator) | 4.00 | 18.00 | - |
2.0× between the cheapest and the dearest of 2 sellers.
Against its tier
- This model$14.00
- Cheapest · GLM 5.3 Flash$0.29
- Tier median · Grok 4.6$8.00
- Dearest · GPT 5.5 Pro (04-23 snapshot)$330.00
#18 of 31 flagship · cheaper than 43%
Details
- Context window
- 1.0M1,048,576 tokens
- Developer
- Sellers
- 22.0× spread
- Cheapest at
- OpenRouter (aggregator)
- Cached input
- $0.20where the source publishes one
- Combined
- $14.00in + out per 1M
- Last checked
- 2026-08-28