Anthropic's new leader in agentic coding, in Rork
Claude Opus 5.5 is the first model in Anthropic's Claude 5.5 family. It is built for agentic coding, long-running tasks, and reasoning. It costs 40% less to run than Opus 5 and writes output over 30% faster. It reads a 1M-token context, so it holds a large app in view at once.
How to use it
- Open the model menu in the composer, on the home page or inside a project.
- Pick Opus 5.5. It comes in three effort levels: Low, Medium, and High.
- Describe your app or the change you want, and send.
Rork builds with the model shown in the menu. You can switch models at any time from there.
Availability
Pro and Max plans include Claude Opus 5.5. On a free plan, the model menu shows the plan that unlocks it.
For a comparison of every model Rork offers, see the model menu in the composer. Availability and billing can change over time.