A closer look says Opus 5’s system prompt is shifting, not shrinking
rajistics · x · 2026-07-25
A blog update argues that the Opus 5 system prompt does not look like a major rewrite.
The attached chart suggests a broader pattern: as models improve, instructions do not necessarily get shorter—they shift into the surrounding safety, tools, memory, and harness layers. The author says more qualitative analysis is still needed.
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