Sonnet 5.5 leak: said to edge out GPT-6 Sol

Mehdi @MehdiCadeOriginally posted 2026.09.27

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🚨 Claude Sonnet Leaks: Outpaces GPT-6 astra > Sonnet 5.5 reportedly set to drop tomorrow at 2 PM New York time > Said to be in its final stages before release > Early testing has it edging out GPT-6 Sol > Expected to land much closer to Opus 5.5 in raw capability > Could come in noticeably cheaper than Opus 5.5 on pricing > A dedicated "claude-sonnet-5-5" model tag has reportedly already surfaced If this holds, it'd be the fastest follow-up release Anthropic's done in a while flagship one week, mid-tier the next Ready for Sonnet 5.5 tomorrow?