Model pricing
Gemini 3.1 Pro API list price — cost per token
Gemini 3.1 Pro costs $2.00 per million input tokens and $12.00 per million output tokens (USD). Requests with >200K tokens in the prompt, including cache reads and writes, use the premium rates for the whole request.
| Token rate | USD / 1M tokens |
|---|---|
| Inputper 1M tokens | $2.00 |
| Output | $12.00 |
| Cache readper 1M tokens | $0.20 |
| Input · >200K context | $4.00 |
| Output · >200K context | $18.00 |
| Cache read · >200K context | $0.40 |
Notional list price. These are Google Gemini API list prices in USD. On Gemini CLI usage this is a notional list price — what usage would cost at API rates, not metered spend.
Cache & context economics
Cache reads cost $0.20 per million tokens — about a tenth of input. The >200K tokens context tier reprices the whole request.
Common questions
- How much does Gemini 3.1 Pro cost per million tokens?
- $2.00 input and $12.00 output per million tokens (USD list price).
- What is the cache-read price for Gemini 3.1 Pro?
- $0.20 per million cached-read tokens — about a tenth of the input rate.
- Does Gemini 3.1 Pro have a context pricing tier?
- Yes — at >200K tokens input rises to $4.00 per million for the entire request.
Track your real cost with JP the Cat
A live menu-bar total, priced to the cent from your local logs — including the cache-write split most tools miss.
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