Gemini API pricing and cost calculator
Estimate Google Gemini API costs. Announced price changes are built in, so the numbers update on the day they take effect.
Prices last verified against official provider pages on . How we verify prices. Written by the Chelure Enterprises Editorial Team.
Gemini API prices per million tokens
| Model | Input | Output (incl. thinking) | Context cache |
|---|---|---|---|
| Gemini 4 Carbon From December 1, 2026: $4.00 in / $20.00 out | $2.00 | $10.00 | $0.10 |
| Gemini 4 Argon From December 1, 2026: $4.00 in / $20.00 out | $2.00 | $10.00 | $0.10 |
| Gemini 4 Hydrogen | $1.50 | $7.50 | $0.075 |
| Gemini 3.8 Flash From January 1, 2027: $1.50 in / $7.50 out | $0.75 | $3.75 | $0.075 |
| Gemini 3.1 Pro Preview (prompts up to 200K) | $2.00 | $12.00 | $0.20 |
| Gemini 3.5 Flash-Lite | $0.30 | $2.50 | $0.03 |
| Gemini 3.1 Flash-Lite | $0.25 | $1.50 | $0.025 |
| Gemini 2.5 Flash-Lite | $0.10 | $0.40 | $0.01 |
Source: Google AI Studio pricing, paid tier, standard, verified November 13, 2026. Context caching also carries an hourly storage fee on some models, which this calculator does not include.
What to watch on a Gemini bill
Three things move Gemini costs more than the headline price. First, scheduled price changes: Google has announced increases for several models, so a budget based on today's price can be wrong next quarter. Second, thinking tokens are billed as output, which can make reasoning-heavy requests cost far more than the visible reply suggests. Third, context caching has a per-hour storage charge on top of the per-token rate, so caching only pays off when the cached content is reused often enough.
Frequently asked questions
How much does the Gemini API cost?
Prices are per million tokens on the paid tier. As of November 13, 2026, Gemini 4 Hydrogen is $1.50 input and $7.50 output, Gemini 3.8 Flash is $0.75 and $3.75, and Gemini 2.5 Flash-Lite is $0.10 and $0.40.
Are any Gemini prices changing soon?
Yes. Google lists Gemini 4 Carbon and Gemini 4 Argon rising from $2 input and $10 output to $4 and $20 on December 1, 2026, and Gemini 3.8 Flash rising from $0.75 and $3.75 to $1.50 and $7.50 on January 1, 2027. The calculator switches to the new price automatically on those dates.
Does Gemini charge more for long prompts?
For Gemini 3.1 Pro Preview, prompts over 200K tokens cost $4 input and $18 output instead of $2 and $12. The calculator uses the up-to-200K tier.
Does thinking cost extra?
Google's output price includes thinking tokens, so a model that thinks at length can produce a larger output count than the visible reply suggests.
Cite this page: Gemini API pricing. Createchz AI Tools, verified November 13, 2026. https://createchz.com/ai-costs/gemini-api-pricing/