Anthropic launches new version of scaled-down “Haiku” model

On Wednesday, Anthropic released Claude Haiku 4.5, the newest mentation of its smallest model. The exemplary billed arsenic offering akin show to Sonnet 4 “at one-third the outgo and much than doubly the speed,” per a institution blog post.

Anthropic sites a scope of caller benchmark results to backmost up those show claims. In the company’s testing, Haiku scored 73% connected SWE-Bench verified and 41% connected the command-line-focused Terminal-Bench — beneath Sonnet 4.5, but connected par with Sonnet 4, GPT-5 and Gemini 2.5 successful each case. Tests amusement akin results connected benchmarks for instrumentality use, machine use, and ocular reasoning.

The caller mentation of Haiku volition go the default for each escaped Anthropic plans and the institution believes it volition beryllium peculiarly appealing for escaped versions of AI products, wherever it tin supply important capabilities portion minimizing server loads. The lightweight quality of the exemplary besides means it’s easier to deploy aggregate Haiku agents successful parallel oregon successful operation with a much blase model.

In a connection to press, Anthropic CPO Mike Krieger said the Haiku would marque caller styles of deployment imaginable successful accumulation for the archetypal time. “It’s is opening up wholly caller categories of what’s imaginable with AI successful accumulation environments – with Sonnet handling analyzable readying portion Haiku-powered sub-agents execute astatine speed,” Krieger said. “We’re giving radical a implicit cause toolbox wherever each exemplary has the close operation of intelligence, speed, and outgo for antithetic parts of the job.” 

The astir contiguous applications are apt to travel successful bundle improvement tools, wherever Claude Code is already commonly utilized and latency is often a captious factor. In statements provided by Anthropic, Zencoder CEO Andrew Filev described the caller mentation of Haiku arsenic “unlocking an wholly caller acceptable of usage cases.”

Haiku 4.5 comes aft a drawstring of high-profile launches for Anthropic: conscionable 2 weeks aft the motorboat of Sonnet 4.5 and 2 months aft the motorboat of Opus 4.1, some of which were hailed arsenic state-of-the-art connected release. The erstwhile mentation of Haiku was released successful October 2024.