Google · Flagship
Gemini 3.1 Pro Preview API pricing
$2.00 / 1M input tokens · $12.00 / 1M output tokens
📊Cheaper than 7 of the other 24 models we track, pricier than 17 — rank 18 of 25 by input price.
Pricing note: Requests over 200K input tokens bill at $4 / $18 instead.
Within the flagship tier (5 models we track), the average input rate is $5.80/1M — Gemini 3.1 Pro Preview runs about 66% below that average.
Output tokens cost 6.0x the input rate for Gemini 3.1 Pro Preview — above the 4.6x average across all tracked models.
Provider
Google
Tier
Flagship
Input /1M tokens
$2.00
Output /1M tokens
$12.00
Context window
≤200K tokens tier
Verified
September 12, 2026