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Claude Opus 4.8 Is Live — What Changed for Vibe Coders (May 2026)
EndOfCoding
2026-05-30•6 min read

Anthropic shipped Claude Opus 4.8 on May 28, 2026 — the same day they raised $65B at a $965B valuation and surpassed OpenAI in US business adoption. The headline model improvement that matters most for vibe coders: Opus 4.8 is 4x less likely to let code flaws pass unremarked. Here's what changed, why it matters, and how to update your workflow to take full advantage.
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EndOfCoding
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