Claude Sonnet 5.5 launches: 30% faster and up to 30% cheaper per task at Sonnet 5 pricing
alvis · hn · 2026-09-29
Anthropic announced Claude Sonnet 5.5 on its official news page. The company calls it its fastest Sonnet yet: over 30% faster output, fewer tokens needed for the same work, and up to 30% lower per-task cost, all at unchanged Sonnet 5 pricing. Discussion is live on Hacker News.
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