Claude Sonnet 5.5 vs Gemini-Omni-1.1-Flash
Gemini-Omni-1.1-Flash is cheaper on output tokens, while Claude Sonnet 5.5 offers a larger context window. Choose Claude Sonnet 5.5 or Gemini-Omni-1.1-Flash based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Claude Sonnet 5.5 | Gemini-Omni-1.1-Flash |
|---|---|---|
| Provider | Anthropic | Poe |
| Input / 1M tokens | $2.00 | $1.52 |
| Output / 1M tokens | $10.00 | $9.09 |
| Context window | 1M | 131K |
| Parameters | — | — |
| Open weights | — | No |
| Released | — | Aug 2026 |
| GPQA Diamond score | 95.6 | — |
| LMArena (Chatbot Arena) Elo score | 1471 | — |
| LMArena WebDev Elo score | 1774 | — |
| LMArena Vision Elo score | 1289 | — |
| Epoch Capabilities Index score | 164 | — |
FAQ
Is Claude Sonnet 5.5 or Gemini-Omni-1.1-Flash cheaper?
Gemini-Omni-1.1-Flash is cheaper on output tokens ($9.09 vs $10.00 per 1M).
Which has the larger context window, Claude Sonnet 5.5 or Gemini-Omni-1.1-Flash?
Claude Sonnet 5.5 has the larger context window (1M tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.