Anthropic released Claude Haiku 5.5 on October 7, 2026, describing it as the cheapest, fastest, and most capable model in its small-model lineup. The model costs roughly 75% less to run than its predecessor and is aimed at high-volume, cost-sensitive tasks such as summarization, database queries, and customer support. Alongside the launch, Anthropic cut Sonnet 5.5 cache-read pricing by 50% and introduced monthly API credits for Max and Team subscribers.
