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simon_willison · Jul 24, 2026 · news
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Introducing Claude Opus 5
simonwillison.netJul 24, 2026
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In brief
Introducing Claude Opus 5 I've been offline kayaking with sea otters for much of today so I haven't had a chance to put Anthropic's new model Claude Opus 5 through its paces yet. The buzz is positive, and Anthropic's...
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