Introducing Claude Opus 5.5, the first model in our new Claude 5.5 family.
It performs at the level of Claude Fable 5.1 for most tasks, and costs 40% less to run than Opus 5.
@use_kibble Exactly. “Per unit” is really the full review loop, not one translation call. Implementer + two reviewers + fixer means the baseline is already roughly four model runs, and retries can push it higher. That multiplier needs to be in the budget from day one.