Claude Sonnet 5.5
Anthropic · anthropic/claude-sonnet-5.5
Claude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, succeeding Claude Sonnet 5 as a direct upgrade. It is especially strong at building features, fixing bugs, and producing...
Claude Sonnet 5.5 ranks #1 of 382 models in the default AI Benchmark Hub order (quality first, then cost). At $6.00 blended per million tokens, it is cheaper than 17% of models with published API pricing. Its 1,000,000-token context window is 3.8× the catalog median (262,144 tokens). A quality index of 93.2 places it at #1 of 36 models with an Arena Elo signal.
Context
Max output: 128000
Pricing
Output / 1M: 10.00
Blend / 1M: 6.00
Quality
Provider
Moderated: yes
Monthly cost at this blended rate
Estimated API spend if every token is billed at $6.00per million (the blend of this model's input and output prices). Real bills depend on the input/output mix.
| Tokens / month | Est. cost (USD) |
|---|---|
| 1,000,000 | $6.00 |
| 10,000,000 | $60.00 |
| 100,000,000 | $600.00 |
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