Claude Sonnet 4.6 Released
CONFIRMEDDate confidence: CONFIRMEDStated as firmHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all CONFIRMED pins88% CONFIDENCEOverall confidence: 88%How well the pin's source and references back up its dates.Weighted average of how firmly 5 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins at 75% confidence or betterThe post is dated "Feb 17, 2026" and says "Claude[2] Sonnet 4.6 is available now on all Claude plans, Claude Cowork, Claude Code, our API, and all major cloud platforms"; the docs model page lists "Released February 17, 2026" and CNBC[3] reported it that day.
Anthropic releases Claude Sonnet 4.6, its most capable Sonnet, which coding testers preferred to Opus 4.5 and which becomes the free default in claude.ai with a 1M-token context window at $3 per million input tokens.
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