You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
System PromptArea: what it touches
ImprovementsKind: in v2.1.280,
ImprovementsSection of the release
What
The main system prompt Claude Code sends was rewritten. The new text seen in this release includes the line: "When building AI applications, default to the latest and most capable Claude models." This appears across the CLI and SDK-CLI system prompt variants for both signed-in and anonymous accounts, in the arm quoted here.
Why
This steers Claude toward recommending newer, more capable Claude models by default when it is helping build AI applications, rather than defaulting to older ones.
