Claude Opus 5.5 released with 40% lower cost than Opus 5
September 22, 2026
Claude Opus 5.5 delivers higher performance in agentic coding and knowledge work while generating output 30% faster than its predecessor. The model uses fewer tokens per task and costs 40% less to run than Opus 5.
HOW THIS AFFECTS YOU
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builderYou can improve application latency and reduce inference costs while increasing coding capabilities.
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founderYou can scale agentic workflows more affordably using this more efficient frontier model.