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A comment on Changes in the system prompt between Claude Opus 4.6 and 4.7. Parent comment

Re:Changes in the system prompt between Claude Opus 4.6 and 4.7 by winwang on Sunday April 19, 2026 @08:44AM (#47823895)
That's usually not how these things work. Only parts of the prompt are actually loaded at any given moment. For example, "system prompt" warnings about intellectual property are effectively alerts that the model gets. ...Though I have to ask in case I'm assuming something dumb: what are you referring to when you said "more than 60,000 words"?
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Re:Changes in the system prompt between Claude Opus 4.6 and 4.7 by sigmoid10 on Sunday April 19, 2026 @08:46AM (#47823904)
What you're describing is not how these things usually work. And all I did was a wc on the .md file.
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Re:Changes in the system prompt between Claude Opus 4.6 and 4.7 by bavell on Sunday April 19, 2026 @09:07AM (#47824034)
The system prompt is always loaded in its entirety IIUC. It's technically possible to modify it during a conversation but that would invalidate the prefill cache for the big model providers.
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