You'll noticeTier: how much it should matter to you
1Useful: 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 used in the agent-claude context was rewritten. The new text states: "The most recent Claude models are the Claude 5 family and Haiku 4.5."
Why
This updates the model list Claude is told about in this context, which affects how it answers questions about which Claude models currently exist.
