Gemini 3.5 Flash-Lite vs Gemini 2.5 Flash: API cost
Standard, cached and batch API prices for Gemini 3.5 Flash-Lite (Google) and Gemini 2.5 Flash (Google), and what each costs for your usage.
Gemini 3.5 Flash-Lite and Gemini 2.5 Flash have the same standard input and output prices.
- Input $9.00
- Cached input $0.9
- Output $22.50
- Input $9.00
- Cached input $0.9
- Output $22.50
| Token type | Gemini 3.5 Flash-Lite | Gemini 2.5 Flash | |
|---|---|---|---|
| Input | $0.30 | $0.30 | Same price |
| Cached input | $0.03 | $0.03 | Same price |
| Output | $2.50 | $2.50 | Same price |
| Batch input | $0.15 | $0.15 | Same price |
| Batch cached input | $0.02 | $0.03 | Gemini 3.5 Flash-Lite is 33% cheaper |
| Batch output | $1.25 | $1.25 | Same price |
Gemini 2.5 Flash: Audio input costs more.
| Workload | Gemini 3.5 Flash-Lite | Gemini 2.5 Flash |
|---|---|---|
Support chatbot 2,000 in / 300 out tokens,
1,000 requests a day, 50% cached | $32.40 | $32.40 |
Document summaries 10,000 in / 800 out tokens,
200 requests a day | $30.00 | $30.00 |
Tagging / classifying 400 in / 20 out tokens,
20,000 requests a day | $102.00 | $102.00 |
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- Gemini 3.5 Flash vs Gemini 3.5 Flash-Lite
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- Gemini 2.5 Pro vs Gemini 2.5 Flash
- Gemini 2.5 Flash vs Gemini 2.5 Flash-Lite
Or see Gemini 3.5 Flash-Lite pricing, Gemini 2.5 Flash pricing, or compare any two models.
FAQ
Frequently asked questions
Is Gemini 3.5 Flash-Lite cheaper than Gemini 2.5 Flash?
Gemini 3.5 Flash-Lite and Gemini 2.5 Flash have the same standard input and output prices. Based on standard API rates last checked on 30 Sept 2026.
How much do Gemini 3.5 Flash-Lite and Gemini 2.5 Flash cost per million tokens?
Gemini 3.5 Flash-Lite: $0.30 per million input tokens and $2.50 per million output tokens. Gemini 2.5 Flash: $0.30 input and $2.50 output. These are standard rates in USD, before tax, from each provider’s own pricing page.
Which is cheaper with the Batch API?
Gemini 3.5 Flash-Lite’s batch rates are $0.15 input and $1.25 output per million tokens (50% off); Gemini 2.5 Flash’s batch rates are $0.15 input and $1.25 output per million tokens (50% off).
Does prompt caching change the comparison?
Gemini 3.5 Flash-Lite charges $0.03 per million cached input tokens, against $0.30 for normal input; Gemini 2.5 Flash charges $0.03 per million cached input tokens, against $0.30 for normal input. Cache write and storage charges are extra and aren’t included here.