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Anthropic Releases Sonnet 5.5 Model for Faster, Cheaper AI Tasks

AI firm Anthropic has released Sonnet 5.5, an updated version of its mid-tier language model. The company states the new model offers significantly faster response times and lower costs compared to its predecessor.

28 September 2026
Anthropic Releases Sonnet 5.5 Model for Faster, Cheaper AI Tasks

Artificial intelligence company Anthropic has launched Sonnet 5.5, an updated iteration of its mid-tier language model. Anthropic claims the new model delivers substantially faster processing speeds and reduced operational costs relative to its predecessor, Sonnet 5.

The Sonnet 5.5 model is positioned as an efficient work assistant, suitable for tasks ranging from coding to the creation of office documents. This release intensifies the competition in the large language model market, where Anthropic aims to provide capable yet more economical solutions.

Sonnet 5, the previous iteration, was announced approximately three months ago and was marketed as a more cost-effective option for running AI agents. The new 5.5 version appears to build on this by enhancing both performance and cost-efficiency.

This update arrives amidst a highly competitive AI landscape, with companies continually striving to improve their models in terms of speed, capabilities, and pricing. Sonnet 5.5 is intended to solidify Anthropic's standing in this dynamic sector.

Original source: techcrunch.com