# 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.

## Why it matters

Teams building on Claude get faster, higher-performing frontier agentic coding and computer use capabilities at a 40% lower operating cost.

## Sources

- [Anthropic: Anthropic releases Claude Opus 5.5 model](https://x.com/claudeai/status/2102435511222890900)

---

Summarized by dstilled on 2026-09-22. https://dstilled.ai/story/792c1ab3-d64c-45c2-886e-569e7f30f9ea