AI will have a vast impact on the world. Anthropic is a public benefit corporation dedicated to securing its benefits and mitigating its risks.
The cheapest, fastest, and most capable small model we’ve ever released.
Designed for high-volume, cost-sensitive work. It’s our fastest, cheapest, and most capable small model to date.
A clear upgrade over Sonnet 5 that runs 30% faster and costs up to 30% less for most work.
Opus 5.5 performs at the level of Fable 5.1 on most work, and costs 40% less to run than Opus 5 on typical workloads.