Gemini 3.1 Pro API price
Other versions: earlier: Gemini 2.5 Pro from $1.25 / $10.00. Compare versions
Cheapest at DeepInfra; 4 sellers compared below.
Cheaper Inference lists it for less, $1.53 input / $9.21 output per 1M, but we have not verified that seller (our read). The prices above are the cheapest seller we consider reliable.
Versions
| Version | What it is | Sellers | From, in / out per 1M |
|---|---|---|---|
| Gemini 3.1 Pro this pagegemini-3.1-pro | Main listing | 4 | $2.00 / $12.00 |
| Gemini 2.5 Progoogle/gemini-2.5-pro | Earlier generation | 16 | $1.25 / $10.00 |
Why there are several: the undated name can move to a newer build when the developer updates it, while a dated snapshot is meant to stay fixed, which can suit pipelines that need repeatable behaviour; an experimental build tests new features. Sellers price each version separately and not every seller offers every version, so check a seller's own docs for the build it serves.
Cost calculator: where to buy, and what it costs you
Pick a use case, a volume and a provider. Monthly figures assume 30 days.
1,500 input and 400 output tokens per request, 30% of input cached.
- Context window
- 1M1,048,576 tokens
- Last checked
- 19 Oct, 19:54 UTC
Price history
Cheapest standard price per 1M tokens, recorded every 6 hours since 16 Oct 2026.
Cheaper Inference: the price floats from one check to the next, so the moves are not listed as changes.
More from Google: Gemini 3.1 Pro Preview $2.00 · Gemini 3.5 Flash Lite $0.30 · Gemini 3.6 Flash $0.75