Anthropic Announces Claude Haiku 5.5, Cost-Optimized Model Coming Within Weeks
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Anthropic announced Claude Haiku 5.5 on September 22, 2026, confirming a new lightweight model to complete its Claude 5.5 family lineup alongside Opus 5.5 and Sonnet 5.5. The company did not specify a launch date, but said the model will arrive "in the coming weeks," built for high-volume and cost-sensitive applications where speed and efficiency matter more than maximum reasoning capacity.
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