Claude Sonnet 5 vs Claude Sonnet 5.5
Both have similar output pricing. Choose Claude Sonnet 5 or Claude Sonnet 5.5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Claude Sonnet 5 | Claude Sonnet 5.5 |
|---|---|---|
| Provider | Anthropic | Anthropic |
| Input / 1M tokens | $2.00 | $2.00 |
| Output / 1M tokens | $10.00 | $10.00 |
| Context window | 1M | 1M |
| Parameters | — | — |
| Open weights | — | — |
| Released | — | — |
| LMArena (Chatbot Arena) Elo score | 1442 | 1471 |
| LMArena WebDev Elo score | 1540 | 1774 |
| LMArena Vision Elo score | 1274 | 1289 |
| GPQA Diamond score | 90.5 | 95.6 |
| Epoch Capabilities Index score | 156 | 164 |
FAQ
Is Claude Sonnet 5 or Claude Sonnet 5.5 cheaper?
Claude Sonnet 5 and Claude Sonnet 5.5 have comparable output pricing.
Which has the larger context window, Claude Sonnet 5 or Claude Sonnet 5.5?
Both models offer a similar context window.
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.