Claude Sonnet 5.5

Anthropic has released Claude Sonnet 5.5, an upgraded version of its Sonnet line. The company says the new model runs more than 30 % faster and cuts costs by a similar margin for most tasks, while keeping the same price as Sonnet 5 and outperforming it on key benchmarks. In tests conducted by Simon Willison, the model showed a slight regression compared to a bug in Opus 5.5 that caused the maximum reasoning process to exhaust tokens before completing an SVG generation. Still, at a “xhigh” effort level, it produced an image of a pelican on a bicycle in 41 seconds, costing 5.74 cents. In programming tasks, Sonnet 5.5 approached the performance of Opus 5.5, including the creation of viral 3D animations.

The most significant point is that this model now powers the free tier of Claude .ai, offering a more capable alternative to the free tier of ChatGPT, which still uses Luna 5.6. This upgrade raises the competitiveness of free AI services, making advanced tools more accessible to users and developers.

For dataqbs, having faster and cheaper models can accelerate projects like open‑garage, which rely on automated content and code generation.

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