Gemini 3.8 Flash vs Gemini 3.5 Flash-Lite: API cost
Standard, cached and batch API prices for Gemini 3.8 Flash (Google) and Gemini 3.5 Flash-Lite (Google), and what each costs for your usage.
Gemini 3.5 Flash-Lite is cheaper than Gemini 3.8 Flash at standard rates, with 2.5× cheaper input and 33% cheaper output.
- Input $22.50
- Cached input $2.25
- Output $33.75
- Input $9.00
- Cached input $0.9
- Output $22.50
Show as a table
| Output tokens | Gemini 3.8 Flash | Gemini 3.5 Flash-Lite |
|---|---|---|
| 0 | $0.75 | $0.3 |
| 250 | $1.69 | $0.93 |
| 500 | $2.63 | $1.55 |
| 750 | $3.56 | $2.18 |
| 1,000 | $4.50 | $2.80 |
| Token type | Gemini 3.8 Flash | Gemini 3.5 Flash-Lite | |
|---|---|---|---|
| Input | $0.75 | $0.30 | Gemini 3.5 Flash-Lite is 2.5× cheaper |
| Cached input | $0.075 | $0.03 | Gemini 3.5 Flash-Lite is 2.5× cheaper |
| Output | $3.75 | $2.50 | Gemini 3.5 Flash-Lite is 33% cheaper |
| Batch input | $0.375 | $0.15 | Gemini 3.5 Flash-Lite is 2.5× cheaper |
| Batch cached input | $0.0375 | $0.02 | Gemini 3.5 Flash-Lite is 47% cheaper |
| Batch output | $1.875 | $1.25 | Gemini 3.5 Flash-Lite is 33% cheaper |
Gemini 3.8 Flash: promotional price until Dec 31, 2026.
| Workload | Gemini 3.8 Flash | Gemini 3.5 Flash-Lite |
|---|---|---|
Support chatbot 2,000 in / 300 out tokens,
1,000 requests a day, 50% cached | $58.50 | $32.40 |
Document summaries 10,000 in / 800 out tokens,
200 requests a day | $63.00 | $30.00 |
Tagging / classifying 400 in / 20 out tokens,
20,000 requests a day | $225.00 | $102.00 |
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Or see Gemini 3.8 Flash pricing, Gemini 3.5 Flash-Lite pricing, or compare any two models.
FAQ
Frequently asked questions
Is Gemini 3.8 Flash cheaper than Gemini 3.5 Flash-Lite?
Gemini 3.5 Flash-Lite is cheaper than Gemini 3.8 Flash at standard rates, with 2.5× cheaper input and 33% cheaper output. Based on standard API rates last checked on Oct 13, 2026.
How much do Gemini 3.8 Flash and Gemini 3.5 Flash-Lite cost per million tokens?
Gemini 3.8 Flash: $0.75 per million input tokens and $3.75 per million output tokens. Gemini 3.5 Flash-Lite: $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 3.8 Flash’s batch rates are $0.375 input and $1.875 output per million tokens (50% off); Gemini 3.5 Flash-Lite’s batch rates are $0.15 input and $1.25 output per million tokens (50% off).
Does prompt caching change the comparison?
Gemini 3.8 Flash charges $0.075 per million cached input tokens, against $0.75 for normal input; Gemini 3.5 Flash-Lite 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.