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The reading also softens 'best coding model in the world' to 'stronger model'; restoring Anthropic's attributed superlative would preserve its force.","excerpt":"Claude Sonnet 4.5 is being released under our AI Safety Level 3 (ASL-3) protections"},{"dimension":"date","status":"pass","explanation":"September 29, 2025 matches the UTC day of evidence.originalPublished, and kind is publisher-page, so no archive disclosure is needed. The page was edited after publication (dateModified 2026-10-15), but the passages the reading relies on are plainly the original launch text, which is consistent with Sonnet 4 leading four months earlier. 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