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Gemini 3.1 Pro Preview API price
google/gemini-3.1-pro-preview
The cheapest Gemini 3.1 Pro Preview API is $1.00/M input at Google (via OpenRouter) (global/flex) - all 5 providers compared below, per 1M tokens.
FlagshipGoogle1.0M context5 sellers
Input
$1.00
per 1M tokens · Google (via OpenRouter) (global/flex)
up to $4.00
Output
$6.00
per 1M tokens · Google (via OpenRouter) (global/flex)
up to $18.00
Where to buy it
Cheapest Gemini 3.1 Pro Preview API providers compared - 5 sellers, from $1.00/M.
Cost calculator
| Provider | Input $/M | Output $/M | Cached in | Uptime | Your cost |
|---|---|---|---|---|---|
| Google (via OpenRouter) (global/flex) | 1.00cheapest | 6.00 | 0.100 | 100% | |
| OrcaRouter (aggregator) | 2.00 | 12.00 | - | - | |
| Google AI Studio (via OpenRouter) | 2.00 | 12.00 | 0.200 | 100% | |
| Flex | 1.00 | 6.00 | 0.100 | 100% | |
| Priority | 3.60 | 21.60 | 0.360 | - | |
| TokenRouter (aggregator) | 2.00 | 12.00 | 0.200 | - | |
| BatchOfficial - Google (Gemini API) | 1.00 | 6.00 | - | - | |
| ≤ 200k tokens ctx | 2.00 | 12.00 | 0.200 | - | |
| > 200k tokens ctx | 4.00 | 18.00 | 0.400 | - | |
| Flex | 1.00 | 6.00 | - | - | |
| Batch | 2.00 | 9.00 | 0.200 | - | |
| Flex | 2.00 | 9.00 | 0.200 | - | |
| Priority | 3.60 | 21.60 | 0.360 | - | |
| Priority | 7.20 | 32.40 | 0.720 | - |
4.0× between the cheapest and the dearest of 5 sellers.
Against its tier
- This model$7.00
- Cheapest · GLM 5.3 Flash$0.12
- Tier median · Gemini 3.1 Pro$11.7313
- Dearest · GPT 5.5 Pro (04-23 snapshot)$210.00
#15 of 36 flagship · cheaper than 60%
Details
- Context window
- 1.0M1,048,576 tokens
- Developer
- Intelligence
- 29.7
- Sellers
- 54.0× spread
- Cached input
- $0.10where the source publishes one
- Cheapest at
- Google (via OpenRouter) (global/flex)
- Combined
- $7.00in + out per 1M
- Last checked
- 2026-10-12
- Availability
- 100.00%median of 4 OpenRouter endpoints, last 30 min