Quoting Boris Cherny
- ID
- 7762
- Status
- summarized
- Published
- 25 Jul 2026, 8:42 AM
- Fetched
- 25 Jul 2026, 9:20 AM
- Provider
- Simon Willison
- Category
- developer-ai
- Original URL
- https://simonwillison.net/2026/Jul/25/boris-cherny/
- Source URL
- https://simonwillison.net/atom/everything/
Excerpt
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 red teaming, Opus 5 is very hard to prompt inject successfully. — Boris Cherny, here's that System Card section, page 73 Tags: prompt-injection, anthropic, claude, generative-ai, ai, llms, boris-cherny
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