Model board / Gemini 3.1 Pro (preview)

Verified 2026-09-03 against the provider's own page. Prices are USD per 1M tokens, list rate — no committed-use, enterprise or volume discount.

promotional through 2026-12-31, per the pricing page. Above a 200K-token prompt the rate steps to $4.00 in / $0.40 cached / $18.00 out. Cache storage $4.50 per 1M/hr — the most expensive storage rate on this board

not stated on the pricing page; pricing tiers at 200K input

explicit caches also bill storage per hour

Watch out

Doubles per token above 200K input; preview models carry extra rate-limit restrictions

What we would use it for

Documents, video and very large prompts

What this has cost, week by week

Output price at each refresh since 2026-07-30. A vendor change is the provider changing its price. Our correction means this board changed what it prints and the provider's charge did not move — the two are never merged, because publishing the second as the first would be a price rise that never happened.

Nothing has moved since we started tracking it.

Where these numbers came from

• https://ai.google.dev/gemini-api/docs/pricing

No number on this page was written that was not read from one of those pages on 2026-09-03. If one is wrong, send us the source URL and it is corrected in the next weekly refresh, with a changelog line saying what was wrong — contact@naderu.com.

The rest of the board

This row sits alongside 53 others on the model board, refreshed every week. The same data as JSON, and the terms for using it, are at /board-data.