Claude Haiku 4.5 (latest)

Claude Haiku 4.5 belongs to Anthropic's claude-haiku family and is positioned as the fast, lightweight lane within the Claude lineup, designed for lightweight agents, office tasks, and responsive chat interactions. It inherits the multimodal input handling shared by recent Claude generations, accepting text, image, and PDF inputs while returning text output, which makes it versatile for document-aware assistants and conversational interfaces that need to reason over mixed media without leaving the Claude ecosystem.

In comparative scoring against Claude Sonnet the listed price, Haiku 4.5 matches on reasoning quality but trails noticeably on coding tasks, while its pricing is roughly half of Sonnet the listed price, making it a strong fit when cost efficiency and responsiveness matter more than frontier coding performance. Across the many providers routing this model, consistent support for tools, reasoning, and temperature control is reported, with some providers additionally offering structured outputs, which broadens its usefulness for production agent pipelines that need predictable behavior at low per-token cost.