Boris Cherny

@bcherny · Jul 24, 2026

Opus 5 is a great model for coding, data analysis, design, biology, knowledge work. More than any of these eval scores, what is most exciting to me is something else: Opus 5 is our least prompt injectable model yet. It is a bit buried in the system card, but across PI evals and

Claude@claudeai· Jul 24, 2026

On several coding and knowledge work evaluations, Opus 5 is the new state-of-the-art:

Elon Musk

@elonmusk

Very impressive

06:23 PM · July 24, 2026 · 22.1K views

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