Anthropic has released Claude Haiku 5.5, positioning it as its fastest and most cost-efficient small model to date with average running costs approximately 75% lower than Haiku 4.5. Pricing for prompts under 100,000 tokens is set at $0.1 per million input tokens and $0.5 per million output tokens. The model is now available on the Claude platform, AWS, Google Cloud, and Microsoft Azure, targeting high-frequency, cost-sensitive applications such as summarization, classification, and sub-agents. Alongside this launch, Anthropic reduced cache read pricing for Sonnet 5.5 by 50%.