Claude Haiku 5.5: our fastest, most efficient Claude 5.5 model

Claude Haiku 5.5 is the fastest, most efficient model in the Claude 5.5 family, built for high-volume, latency-sensitive work. Power chat, voice agents, live support, and in-app assistants with quick responses. Run classification, summarization, and extraction at scale. Our most capable Haiku yet, with effort controls to tune cost against intelligence. Now at a lower price.