Claude Haiku 4.5 (latest)

Claude Haiku 4.5 is the newest iteration in Anthropic's Haiku line, positioned as a lightweight yet capable member of the Claude family. It serves a compact reasoning model that accepts text and image inputs (with PDF handling reported on third-party listings) and produces text outputs through an Anthropic-messages compatible API. Its design emphasizes fitting into agentic workflows where many shorter requests are made, rather than serving as a frontier heavyweight. Identity across the catalog and third-party indexers agrees on the model id "claude-haiku-4.5" and the display name "Claude Haiku 4.5 latest."

For practical use, the model pairs a 200,000-token context window with a 64,000-token output ceiling, giving plenty of room for document-grounded conversations, repository-level code reasoning, and multi-turn tool use. Cost is the headline trait: input tokens run far below frontier rates, with aggressive cache-read pricing that rewards prompt reuse across agent sessions, a pattern the indexers explicitly illustrate using typical short and long session shapes. The reasoning flag is enabled by default, making the model well-suited for lightweight planning, classification, extraction, summarization, and routing tasks inside larger agent pipelines, while still benefiting from the same Anthropic-messages tool calling interface used by larger Claude siblings.