Reported Claude Sonnet 5.5 launch: 30% faster, up to 30% cheaper, with code-painting demos
addyosmani · x · 2026-09-29
addyosmani posted that Claude Sonnet 5.5 launched today: 30% faster than Sonnet 5 and up to 30% cheaper for most work, positioned for well-scoped everyday tasks (bug fixes, docs, slides). His team had models paint the same photo in code to show the capability jump, crediting @IceSolst for the reference image and @jkeatn for code-to-painting ideas. The launch is not confirmed by official Anthropic channels.
Related event: Anthropic Releases Claude Sonnet 5.5(48 posts)→
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