Google Gemini bills per token, split into input (your prompt) and output (the model's reply), priced per million tokens. Across the 13 models tracked here, output runs from Gemini 3.1 Flash-Lite at $1.5 per 1M output tokens up to Gemini 3.1 Pro Preview (>200k, incl. thinking) at $18. Input is cheaper, and cached input cheaper still. The table below has every model's exact rates, verified June 14, 2026.
| Model | Input / 1M | Output / 1M |
|---|---|---|
| Gemini 3.5 Flash | $1.5 | $9 |
| Gemini 2.5 Pro (<=200k) | $1.25 | $10 |
| Gemini 2.5 Pro (>200k) | $2.5 | $15 |
| Gemini 2.5 Flash (text/image/video) | $0.3 | — |
| Gemini 2.5 Flash | — | $2.5 |
| Gemini 3.1 Flash-Lite (text/image/video) | $0.25 | — |
| Gemini 3.1 Flash-Lite | — | $1.5 |
| Gemini 3.1 Pro Preview (<=200k) | $2 | — |
| Gemini 3.1 Pro Preview (<=200k, incl. thinking) | — | $12 |
| Gemini 3.1 Pro Preview (>200k) | $4 | — |
| Gemini 3.1 Pro Preview (>200k, incl. thinking) | — | $18 |
| Gemini 3 Flash Preview (text/image/video) | $0.5 | — |
| Gemini 3 Flash Preview | — | $3 |
2.5 Pro has tiered pricing: prompts <=200k tokens cheaper than >200k. Free tier available via Google AI Studio with rate limits. Page now includes Gemini 3.x models. Only Standard (non-Batch/Flex/Priority) paid tier prices captured for core components.
Source: ai.google.dev · Catalog 2026-06-14.2. Confirm the live rate before you commit.
The rates above are per unit. Your bill is those rates times how hard your code leans on Google Gemini, plus everything around it. PrePrice scans your project, finds where you call Google Gemini, and computes your real cost per user and what to charge.
Find your real cost — freeBy output-token price, Gemini 3.1 Flash-Lite is currently the cheapest Google Gemini model at $1.5 per 1M output tokens. The cheapest model per token is not always the cheapest per finished task, since a weaker model can need more retries or longer prompts.
Google Gemini is pay-as-you-go and billed per token: you pay for input tokens (your prompt and context) and output tokens (the response) separately, priced per million tokens. There is no monthly base fee for the API itself.
The per-unit rate is only one of the four numbers that set your bill. The others are how much your app uses Google Gemini, how often, and across how many users. Long prompts, retries, multi-step agents, and uncached repeated context all multiply the rate. PrePrice models that usage from your code so the number is real, not a guess.
From Google Gemini's official pricing page (ai.google.dev), verified June 14, 2026 and re-checked on a schedule. Pricing changes often, so confirm the live rate before you commit.
See the full AI Cost Index or estimate your monthly bill.