Claude Haiku 5.5

AnthropicOct 7, 2026Oct 7, 2026, 2:01 PM AST

A new small model from Anthropic, Claude Haiku 5.5, is built for high volume jobs like summaries, classification and customer support. It is the first Haiku with an adjustable effort setting, letting developers trade cost for intelligence on each task, and Anthropic says it runs around 75 percent cheaper on average than the previous version. It is also the company's fastest model to date.

Summary written with AI by HowTechMoves, based on reporting by Anthropic.

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