Anthropic releases Claude Opus 5.5 model
The model matches Claude Fable 5.1 performance while generating output 30% faster and costing 40% less than Opus 5.
- External evaluators before release included METR and Frontier Design.
- The model leads on agentic coding, computer use, and knowledge work tasks.
- Anthropic is increasing five-hour usage limits on Pro, Max, and Team plans.
- Subscription users receive a rate limit reset that can be saved and used at will.
Teams building on Claude get faster, higher-performing frontier agentic coding and computer use capabilities at a 40% lower operating cost.
