Claude Sonnet 5.5 (AU) vs Gemini 3.1 Pro Preview
Claude Sonnet 5.5 (AU) is cheaper on output tokens, while Gemini 3.1 Pro Preview offers a larger context window. Choose Claude Sonnet 5.5 (AU) or Gemini 3.1 Pro Preview based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Claude Sonnet 5.5 (AU) | Gemini 3.1 Pro Preview |
|---|---|---|
| Provider | Amazon Bedrock | |
| Input / 1M tokens | $2.20 | $2.00 |
| Output / 1M tokens | $11.00 | $12.00 |
| Context window | 1M | 1M |
| Parameters | — | — |
| Open weights | No | No |
| Released | Sep 2026 | Feb 2026 |
| LMArena (Chatbot Arena) Elo score | — | 1480 |
| GPQA Diamond score | — | 94.4 |
| LMArena WebDev Elo score | — | 1447 |
| LMArena Vision Elo score | — | 1296 |
| FrontierMath score | — | 36.9 |
| LiveBench score | — | 77.1 |
FAQ
Is Claude Sonnet 5.5 (AU) or Gemini 3.1 Pro Preview cheaper?
Claude Sonnet 5.5 (AU) is cheaper on output tokens ($11.00 vs $12.00 per 1M).
Which has the larger context window, Claude Sonnet 5.5 (AU) or Gemini 3.1 Pro Preview?
Gemini 3.1 Pro Preview 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.