Story
simon_willison ยท Sep 28, 2026 ยท news
Source brief
Claude Sonnet 5.5
simonwillison.netSep 28, 2026
original source linked
In brief
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...
