Gemini API pricing 2026
Gemini API pricing starts at $0.25 per million input tokens for Gemini 3.1 Flash-Lite, the cheapest model Google offers to new projects, and the Flash and Flash-Lite models also have a free tier. Gemini 4 Argon, the newest flagship, costs $2 in and $10 out until 30 November 2026, then doubles to $4 and $20. Output prices include thinking tokens.
Google Gemini prices per 1M tokens
| Model | Input | Cached | Output | Context |
|---|---|---|---|---|
Gemini 4 Argongemini-4-argonFrom December 1, 2026: $4.00 in, $20.00 out. Implicit caching only. | $2.00 | $0.10 | $10.00 | 1M |
Gemini 3.1 Pro Previewgemini-3.1-pro-previewOver 200K tokens: $4.00 in, $18.00 out. | $2.00 | $0.20 | $12.00 | Not listed |
Gemini 3.8 Flashgemini-3.8-flashFrom January 1, 2027: $1.50 in, $7.50 out. Free tier available. | $0.75 | $0.075 | $3.75 | Not listed |
Gemini 3.6 Flashgemini-3.6-flashFrom January 1, 2027: $1.50 in, $7.50 out. Free tier available. | $0.75 | $0.075 | $3.75 | Not listed |
Gemini 3.5 Flash-Litegemini-3.5-flash-liteFree tier available. | $0.30 | $0.03 | $2.50 | Not listed |
Gemini 3.1 Flash-Litegemini-3.1-flash-liteFree tier available. Text, image and video input. Audio input costs $0.50. | $0.25 | $0.025 | $1.50 | Not listed |
Gemini 3 Flash Previewgemini-3-flash-previewFree tier available. | $0.50 | $0.05 | $3.00 | Not listed |
Standard tier, US dollars. Source: Gemini API pricing, checked November 1, 2026.
Google Gemini cost calculator
Includes reasoning or thinking tokens.
Cache write fees are not included.
Estimate tokens from text
About 0 tokens
A rough count at about 4 characters per token for English. Every provider tokenizes differently; Anthropic says Claude 4.7 and later produce about 30% more tokens for the same text.
| Model | Per request | Per month |
|---|---|---|
| Gemini 3.1 Flash-Lite$0.25 in / $1.50 out | $0.0028 | $27.50 |
| Gemini 3.5 Flash-Lite$0.30 in / $2.50 out | $0.0036 | $36.50 |
| Gemini 3 Flash Preview$0.50 in / $3.00 out | $0.0055 | $55.00 |
| Gemini 3.8 Flash$0.75 in / $3.75 out | $0.0079 | $78.75 |
| Gemini 3.6 Flash$0.75 in / $3.75 out | $0.0079 | $78.75 |
| Gemini 4 Argon$2.00 in / $10.00 out | $0.021 | $210.00 |
| Gemini 3.1 Pro Preview$2.00 in / $12.00 out | $0.022 | $220.00 |
Standard tier prices per 1M tokens. Batch processing is about half price at OpenAI, Anthropic and Google. Taxes, tool fees and free tiers are not included.
Caching, batch and other pricing rules
- Gemini 4 Argon goes from $2 / $10 to $4 / $20 on 1 Dec 2026. Gemini 3.8 Flash and 3.6 Flash go from $0.75 / $3.75 to $1.50 / $7.50 on 1 Jan 2027.
- The free tier (Flash and Flash-Lite models) has free input and output tokens, but Google uses free tier data to improve its products. Paid usage is not used.
- Gemini 3.1 Pro Preview charges more for prompts over 200K tokens.
- Explicit context caching also bills storage per hour, for example $1.00 per 1M tokens per hour on Flash-Lite and $4.50 on 3.1 Pro Preview.
- Batch is 50% cheaper. Grounding with Google Search includes 5,000 free requests a month, then costs $14 per 1,000.
- Google is limiting the 2.5 models to existing users and recommends 3.5 Flash-Lite or 3.8 Flash for new projects.
Price change log
- Rechecked: no price changes. Added Gemini 3 Flash Preview.
- First check. Price rises announced for Gemini 4 Argon (1 Dec 2026) and Gemini 3.8 and 3.6 Flash (1 Jan 2027).
FAQ
Is the Gemini API free?
Partly. Gemini 3.8 Flash, 3.6 Flash, 3.5 Flash-Lite and 3.1 Flash-Lite have a free tier with free input and output tokens, within rate limits. Gemini 4 Argon and 3.1 Pro Preview are paid only. Free tier data can be used by Google to improve its products.
How much does Gemini 4 Argon cost?
$2 per million input tokens and $10 per million output tokens until 30 November 2026. From 1 December 2026 it is $4 and $20.
Are thinking tokens billed in Gemini?
Yes. Google's output prices include thinking tokens, so a model that thinks longer costs more per answer.