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Felix Rieseberg @felixrieseberg · 24 Jul 2026

Happy Opus 5 launch day! It's a good model - on multiple benchmarks, it's SOTA and beats Fable 5, especially long-horizon agentic tasks. On the rest, it gets pretty darn close. I bet that it'll become many people's favorite workhorse for serious work in Claude Code, Cowork, and https://t.co/ZXBT1DnSFX
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