Free Tool
Google API Cost Calculator
Estimate your monthly and annual Google Gemini API cost from your request volume and average token counts. See the full Google listing.
Not sure how many tokens your prompts use? Paste your text into the Token Calculator for exact counts first.
Formula: monthly cost = monthly requests × ((avg input tokens × input price) + (avg output tokens × output price)) / 1,000,000
gemini-3.8-flash
$0.75/M in · $3.75/M out
gemini-3.1-pro-preview
$2/M in · $12/M out
Google Gemini pricing
Published list price per million tokens for Google's current Gemini models.
| Model | Input $/M tokens | Output $/M tokens |
|---|---|---|
| gemini-3.1-pro-preview | $2 | $12 |
| gemini-3.8-flash | $0.75 | $3.75 |
| gemini-3.7-flash | $0.75 | $3.75 |
| gemini-3.6-flash | $0.75 | $3.75 |
| gemini-3.5-flash | $1.5 | $9 |
| gemini-3.5-flash-lite | $0.3 | $2.5 |
| gemini-3.1-flash-lite | $0.25 | $1.5 |
| gemini-3.1-flash-lite-preview | $0.25 | $1.5 |
Frequently asked questions
How much does Google's gemini-3.1-pro-preview cost?
gemini-3.1-pro-preview costs $2 per million input tokens and $12 per million output tokens. Use the calculator above to estimate your own monthly cost from your expected request volume and average token counts.
What is the cheapest Google model?
gemini-3.1-flash-lite is Google's cheapest current Gemini model, priced at $0.25 per million input tokens and $1.5 per million output tokens, versus $2 / $12 for the flagship gemini-3.1-pro-preview.
How does Google API pricing work?
Google bills per token, separately for input tokens (what you send) and output tokens (what the model generates), priced per million tokens. Output tokens typically cost more than input tokens because generation is more compute-intensive. Total request cost is (input tokens × input price + output tokens × output price) / 1,000,000, multiplied by your request volume.
How do I estimate my monthly Google API cost?
Enter your expected monthly request volume and average input/output tokens per request into the calculator above, pick one or more Gemini models to compare, and it computes monthly cost, annual cost, cost per request, and cost per user instantly. Add an optional monthly growth rate to see a 12-month cost projection.
Compare across providers
Want to compare Google against other providers side by side? Use the full AI Cost Calculator.