Model releasesSeptember 22, 2026Impact
Claude Opus 5.5 retakes the overall lead
Anthropic's Claude Opus 5.5 launched with the strongest agentic coding results yet recorded and moved to the top of our overall race.
Why it matters
Coding and agents are where AI spend is concentrating. Opus 5.5 leading both makes it the default choice for many engineering teams, though its overall lead is a photo finish.
The details
- Opus 5.5 leads our coding, debugging, front-end and tool-use races, and edges the overall race in a photo finish.
- Pricing is unchanged from Opus 5, with a cheaper effort setting for routine tasks.
- It has held #1 overall every week since launch; see the overall race for its current streak.
Models in this story
Provenance: Lab announcement and system card; independent coding benchmarks confirm the lead. Illustrative placeholder story.