Google Gemini API pricing calculator
Gemini 3.1 Pro Pricing Calculator: Input and Output Token Costs
Estimate prompt, response, cached input, and volume costs for Gemini 3.1 Pro. Pricing verified 2026-06-25 from the provider source.
Quick estimate
No API key needed. Pick a model, paste your question, choose the answer length, and get a close cost estimate.
3. How long will the AI answer be?
Your estimate will appear here.
Paste a prompt, choose an answer length, and calculate.
Pricing table
Input: $2 per 1M tokens
Output: $12 per 1M tokens
Cached input: $0.2 per 1M tokens
Context window: 1,000,000 tokens
Example prompt costs
A 2,000 token prompt and 1,000 token answer costs about $0.016000 before tool add-ons.
Long-context general model placeholder.
How much does Gemini 3.1 Pro cost per 1M input tokens?
Gemini 3.1 Pro is seeded at $2 per 1M input tokens for the standard tier.
How much does Gemini 3.1 Pro cost per 1M output tokens?
Gemini 3.1 Pro is seeded at $12 per 1M output tokens.
Does Gemini 3.1 Pro support cached input pricing?
Yes. The cached input seed price is $0.2 per 1M tokens.