Claude Sonnet 5.5 vs Gemini Omni 1.1 Flash
Price, context window & benchmark comparison
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Verdict: Gemini Omni 1.1 Flash is 16% cheaper than Claude Sonnet 5.5 on a typical 3:1 input/output mix. Claude Sonnet 5.5 has the larger context window (1M vs 131K).
| Claude Sonnet 5.5 | Gemini Omni 1.1 Flash | |
|---|---|---|
| Input price / 1M | $2.00 | $1.50 |
| Output price / 1M | $10.00 | $9.00 |
| Blended price (3:1) | $4.00 | $3.38 |
| Cached input / 1M | $0.10 | — |
| Context window | 1M | 131K |
| Max output | 128K | 66K |
| Intelligence index | 54.5 | — |
| Coding index | — | — |
| Providers | 10 | 1 |
| Best provider uptime (30m) | 100.0% | 100.0% |
| Vision input | Yes | Yes |
| Reasoning | Yes | Yes |
| Tool calling | Yes | No |
| Released | 2026-09-28 | 2026-11-04 |
| Retirement | — | — |
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FAQ
Which is cheaper, Claude Sonnet 5.5 or Gemini Omni 1.1 Flash?
Gemini Omni 1.1 Flash is 16% cheaper than Claude Sonnet 5.5 on a typical 3:1 input/output mix.
Claude Sonnet 5.5 vs Gemini Omni 1.1 Flash: which has a bigger context window?
Claude Sonnet 5.5: 1,000,000 tokens. Gemini Omni 1.1 Flash: 131,072 tokens.
How much would 1 million requests cost?
At 2,000 input + 500 output tokens per request: Claude Sonnet 5.5 ≈ $9,000, Gemini Omni 1.1 Flash ≈ $7,500.
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