Google API pricing
15 models tracked · headquartered in US · official pricing
Free tier: Ongoing free tier What Google gives you free, in its own words
| Model | Input | Output | Context | |
|---|---|---|---|---|
| Gemini 2.5 Flash-Lite legacy | $0.1 | $0.4 | 1.05M | reasoning vision |
| Gemini 3.1 Flash Lite | $0.25 | $1.5 | 1.05M | reasoning vision |
| Gemini 3.1 Flash Lite Preview retired | $0.25 | $1.5 | 1.05M | reasoning vision |
| Gemini 2.5 Flash | $0.3 | $2.5 | 1.05M | reasoning vision |
| Gemini 3.5 Flash-Lite | $0.3 | $2.5 | 1.05M | reasoning vision |
| Gemini 3 Flash Preview | $0.5 | $3 | 1.05M | reasoning vision |
| Gemini 3.8 Flash | $0.75 | $3.75 | 1.05M | reasoning vision |
| Gemini 3.6 Flash | $0.75 (Promotional rate until 2026-12-31 — standard rate $1.5/M) | $3.75 (Promotional rate until 2026-12-31 — standard rate $7.5/M) | 1.05M | reasoning vision |
| Gemini 3.7 Flash retired | $0.75 (Promotional rate until 2026-12-31 — standard rate $1.5/M) | $3.75 (Promotional rate until 2026-12-31 — standard rate $7.5/M) | 1.05M | reasoning vision |
| Gemini 3.5 Flash retired | $1.5 | $9 | 1.05M | reasoning vision |
| Gemini 2.5 Pro legacy | $1.25 | $10 | 1.05M | reasoning vision |
| Gemini 3 Pro Preview retired | $2 | $12 | 1.05M | reasoning vision |
| Gemini 3.1 Pro | $2 | $12 | 1.05M | reasoning vision |
| Gemini 4 Argon | $2 (Promotional rate until 2026-11-30 — standard rate $4/M) | $10 (Promotional rate until 2026-11-30 — standard rate $20/M) | 1.05M | reasoning vision |
| Gemini 4 Carbon | $2 (Promotional rate until 2026-11-30 — standard rate $4/M) | $10 (Promotional rate until 2026-11-30 — standard rate $20/M) | 1.05M | reasoning vision |
Compare Google’s models on your own workload
How Google prices its models
Output prices across Google's 9 current models run from $1.5 per 1M tokens (Gemini 3.1 Flash Lite) to $12 (Gemini 3.1 Pro), a 8x spread. Picking the smallest model that does the job is usually the biggest saving available.
Discounts: caching and batch
9 of 9 current models list a cached-input rate, from 90% off the fresh input rate on Gemini 3.1 Flash Lite. 0 list a batch discount for work that can wait.
Recorded price changes
No vendor price change to a Google input or output rate is on record since tracking began. Corrections we made to our own readings are listed on the changes page.
Where these prices come from
Every rate above is read from Google's own pricing page (linked here) and re-checked every morning. A disputed figure is marked rather than hidden; see how PromptSpend checks prices.
Common questions
How much do Google API models cost?
PromptSpend tracks 15 Google models. The cheapest on a blended rate is Gemini 2.5 Flash-Lite, at $0.1 per 1M input tokens and $0.4 per 1M output tokens; the most expensive is Gemini 4 Carbon, at $2 in and $10 out.
Does Google have a free API tier?
PromptSpend's verdict is "Ongoing free tier". Its free-tier page gives Google's own wording for each claim, with a link to the page it came from and the date it was read.
Where do the Google prices come from?
From Google's own pricing page, https://ai.google.dev/gemini-api/docs/pricing, with each model's check date shown on its page. Prices change without notice, and regional premiums, priority tiers and negotiated discounts are not included.