Claude Opus 5.5 Price, Benchmarks and Limits
Summary: Claude Opus 5.5 in 30 Seconds Released 22 September 2026, available the same day on every platform Anthropic ships to. $4 in / $20 out per million tokens, against $5 / $25 on Opus 5. Cache reads drop from $0.50 to $0.20. Anthropic measures a 40% lower total cost on typical workloads and 30%+ faster output generation. Model ID is claude-opus-5-5. Four breaking API changes land with it. Sonnet 5.5 and Haiku 5.5 follow in the coming weeks. What Opus 5.5 Costs The headline price is 20% under Opus 5, but the number that moves most bills is the cache read rate. On agentic and coding work, cache reads are where the majority of spend lands, and they got 60% cheaper. ...