BiWu.AiGemini 3.1 Pro Preview API Pricing
Gemini 3.1 Pro Preview is a Gemini model. On the official Google Gemini API, it costs $2 per 1M input tokens and $12 per 1M output tokens, with cached input at $0.20.
Prices checked Oct 10, 2026
Input / 1M tokens
$2
Output / 1M tokens
$12
Cached input / 1M
$0.20
Providers and plans
1
Official Gemini 3.1 Pro Preview API price
Source: Google Gemini API. Prices per 1 million tokens.
| Token type | Price per 1M tokens |
|---|---|
| Input | $2 |
| Output | $12 |
| Cached input (cache read) | $0.20 |
Gemini 3.1 Pro Preview prices by provider
Per-token prices listed for this model by the official API and other providers, per 1M tokens.
| Provider | Type | Input | Output | Cached input |
|---|---|---|---|---|
| Google Gemini API | Official API | $2 | $12 | $0.20 |
Gemini 3.1 Pro Preview API pricing FAQ
How much does Gemini 3.1 Pro Preview cost per 1M tokens?
On the official Google Gemini API, Gemini 3.1 Pro Preview costs $2 per 1M input tokens and $12 per 1M output tokens. Cached input costs $0.20 per 1M tokens. Prices checked Oct 10, 2026.
How much does prompt caching save on Gemini 3.1 Pro Preview?
Cached input is billed at $0.20 per 1M tokens, 90% less than the standard input price of $2.
What does a typical Gemini 3.1 Pro Preview API request cost?
A request with 10,000 input tokens and 1,000 output tokens costs about $0.032 at the official rates ($2 × 0.01 + $12 × 0.001).
How does Gemini 3.1 Pro Preview compare with other Gemini models?
2 of the 3 Gemini models listed here have a lower output price than Gemini 3.1 Pro Preview. The cheapest is Gemini 3.1 Flash-Lite at $1.50 per 1M output tokens.
Other Gemini models
BiWu.Ai lists public API prices for reference and does not sell API access. Free and low-cost providers may have rate limits, queues, regional restrictions or changing terms. Check the provider's pricing page before you build on it.