Introducing Claude Haiku 5.5: the cheapest, fastest, and most capable small model we’ve ever released.
Along with this launch, we’re making improvements to the value of our model range. We’re halving the price of Claude Sonnet 5.5’s cache reads, which means Sonnet 5.5 now runs around 20% cheaper on most agentic work. And we’re introducing a new monthly API credit for our Claude Max and Team subscribers, designed to support our users in building new agents and applications that run on the Claude Platform.
OSWorld 2.1 measures how well agents can operate a real computer to finish long, multi-step tasks.
Artificial Analysis’s GDPval-AA v2.1 evaluates agents on real-world professional work across 44 occupations.



