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We've launched Claude Haiku 5.5 (claude-haiku-5-5), our most capable model tuned for high-volume and

UpdateyesterdayUnverifiedAdded Oct 8, 2026

We've launched Claude Haiku 5.5 (claude-haiku-5-5), our most capable model tuned for high-volume and latency-sensitive work. It has a 1M token context window, 128k max output tokens, and adaptive thinking with the effort parameter.

Topics: LLMs, Developer tools, Performance

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Also shipped on Oct 7, 2026

Anthropic in October 2026