Gemini 3.5 Flash vs Gemini 4 Carbon
Price, context window & benchmark comparison
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Verdict: Gemini 3.5 Flash is 16% cheaper than Gemini 4 Carbon on a typical 3:1 input/output mix.
| Gemini 3.5 Flash | Gemini 4 Carbon | |
|---|---|---|
| Input price / 1M | $1.50 | $2.00 |
| Output price / 1M | $9.00 | $10.00 |
| Blended price (3:1) | $3.38 | $4.00 |
| Cached input / 1M | $0.15 | $0.10 |
| Context window | 1M | 1M |
| Max output | 66K | 944K |
| Intelligence index | — | 60 |
| Coding index | 70.1 | — |
| Providers | — | 7 |
| Best provider uptime (30m) | — | 100.0% |
| Vision input | Yes | Yes |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Released | 2026-05-19 | 2026-11-10 |
| Retirement | — | — |
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FAQ
Which is cheaper, Gemini 3.5 Flash or Gemini 4 Carbon?
Gemini 3.5 Flash is 16% cheaper than Gemini 4 Carbon on a typical 3:1 input/output mix.
Gemini 3.5 Flash vs Gemini 4 Carbon: which has a bigger context window?
Gemini 3.5 Flash: 1,048,576 tokens. Gemini 4 Carbon: 1,048,576 tokens.
How much would 1 million requests cost?
At 2,000 input + 500 output tokens per request: Gemini 3.5 Flash ≈ $7,500, Gemini 4 Carbon ≈ $9,000.
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