Claude Haiku 4.5: the small model that comes close to Sonnet 4 at coding
In one sentence Anthropic releases Claude Haiku 4.5: coding performance similar to Claude Sonnet 4 at one-third the cost and more than twice the speed. Priced at $1/$5 per million tokens.
Anthropic adds the small model, Haiku 4.5, to the Claude 4.5 family two weeks after Sonnet 4.5. According to Anthropic it delivers coding performance similar to Sonnet 4 (the mid-tier model from May 2025) at one-third the cost and more than twice the speed; on some computer-use tasks it beats Sonnet 4.
Price: $1 per million input tokens and $5 per million output tokens. Anthropic positions it as a drop-in replacement for Haiku 3.5 and Sonnet 4, suited to high-volume, low-latency tasks.
One use case Anthropic highlights: Sonnet 4.5 breaks down a problem and orchestrates several Haiku 4.5 instances that run the subtasks in parallel.
Companies
Anthropic
Tools
Claude Haiku 4.5
Tags
Sources