Claude Opus 5.5 now available on AI Gateway
UpdateVerifiedAdded Sep 22, 2026
Claude Opus 5.5 from Anthropic is now available on AI Gateway . It is a step-change improvement over Opus 5 , with its biggest gains in agentic coding, long-running agent tasks, and knowledge work. Anthropic cites that Opus 5.5 performs at the level of Fable 5.1, but ~30% faster and ~40% cheaper than Opus 5 per task.
Topics: AI agents, LLMs, Developer tools, Coding agents, Performance
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