Checked fact 35593 Nov 2026Agents and apps
Anthropic's prompting guide says Claude Opus 4.5 and Claude Opus 4.6 are more responsive to the system prompt than previous models.
The exact words it rests on
Claude Opus 4.5 and Claude Opus 4.6 are also more responsive to the system prompt than previous models.
What the source said when we opened it, on 3 Nov 2026.
The source
Prompting best practices - Claude Platform Docs
Checked
Checked by the notis newsroom on , against the source above.
In the story
What a system prompt does, and which of Anthropic's prompts are published 3 Nov 2026
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