THE ORIGINAL SOURCE
Simon Willison's Weblog ·
Simon Willison comments on Claude Sonnet 5.5, citing Anthropic’s reported speed and cost improvements. He also describes a pelican-SVG test that exhausted its token budget.
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Original excerpt
Sonnet 5.5 appears to be almost as good as Opus 5.5 on some coding tasks, including various viral 3D animation tricks .
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Original excerpt
Claude Sonnet 5.5 . New Sonnet model from Anthropic today. They say it "runs 30%+ faster, and costs up to 30% less for most work" - it's priced the same as Sonnet 5 but appears to beat it on every benchmark, and should be cheaper to run as well.
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Original excerpt
the "max" thinking effort pelican thought for 128,000 tokens (at a cost of $1.28) before running out of tokens and failing to produce an SVG.
Here are some pelicans riding bicycles . Sonnet 5.5 suffered from the same bug as Opus 5.5 :
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nafyi.