Gemini API Cost Calculator
Estimate Google Gemini 2.5 Pro, Flash and Flash-Lite costs.
Results update automatically as you type.
- Input cost
- $0.00125
- Output cost
- $0.00500
- Per request
- $0.00625
- Per day
- $6.25
- Per month
- $187.50
Estimate the cost of Google's Gemini API for the 2.5 Pro, Flash and Flash-Lite models. Enter your tokens and volume to see per-request and monthly cost. Note that Gemini Pro pricing steps up above 200K input tokens.
How this is calculated
This calculator uses the api cost formulas described in our methodology. All figures are estimates for planning; verify current pricing with each provider before relying on them.
Worked example (defaults)
With the default inputs above, here is the result:
- Input cost
- $0.00125
- Output cost
- $0.00500
- Per request
- $0.00625
- Per day
- $6.25
- Per month
- $187.50
Frequently asked questions
Why does Gemini Pro have two prices?+
Gemini 2.5 Pro charges more once a prompt exceeds 200K input tokens ($2.50 input / $15 output per 1M vs $1.25 / $10). This tool uses the base rate; large prompts cost more.
Which Gemini model is cheapest?+
Gemini 2.5 Flash-Lite is the lowest-cost route, followed by Flash. Pro is reserved for the hardest reasoning and longest documents.