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Claude: System Prompts

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first seen Aug 16, 2026 · last seen Aug 21, 2026 · published Aug 16, 2026

Featured on 1 day: August 17, 2026.

Posted on X

2026-08-17
Claude's docs just published their system prompt guide. The useful bit: they show you exactly how the model weights instructions (task > examples > tone), so you can stop guessing which part of your prompt it's actually following.