A sample of 250,000 conversations found 0.51% about elections and 0.002% breaking Anthropic's election rules. Testers found Claude misses misuse spread across steps.
Model
Claude Sonnet 5.5
Claude Sonnet 5.5 is an artificial intelligence model developed by Anthropic. This page lists what is publicly known about the model and every benchmark result Aivio News has recorded for it, each with its own source and date.
- Developer
- Anthropic
- Model
- Claude 5
- Released
- September 28, 2026
- Modalities
- Model, Image, Code
- Status
- Active
- Source
- anthropic.com
Benchmarks
All storiesNo verified results recorded yet.
More from Claude Sonnet 5.5
Anthropic says it cut what distillers extract from Claude by 90 to 99%, and names Zhipu and Moonshot
The company says reasoning tokens pulled out by distillers are now 10 to 100 times lower than before, and that it has turned away trillions of tokens of paying traffic.
Haiku 4.5 cost $1 per million input tokens. Haiku 5.5 costs ten cents on short prompts — and Anthropic's own evaluations put it well ahead of its predecessor.
The company says its generally available models block most cyber work, and that vetted defenders can now apply for one of three graded reductions in that blocking.
Anthropic's mid-tier Sonnet 5.5 scores 1,844 on a work benchmark where its flagship scores 1,846
The cheaper model keeps Sonnet 5's price of $2 and $10 per million tokens, and Anthropic's own evaluations put it level with Opus 5.5 on general knowledge work.