Claude API Adds Mid-conversation System Messages
aipreviewengineer
feature
The Claude API now supports mid-conversation system messages across multiple model versions, including Fable 5, Mythos 5, and Opus 4.8. This feature allows for dynamic system prompt adjustments during a chat session, enhancing conversational control and flexibility. It is available on the Claude API, Claude in Amazon Bedrock, and Claude on Vertex AI, with no beta header needed.
Features (1) ›
- Mid-conversation System Messages Available
Mid-conversation system messages are now available on Claude Fable 5, Claude Mythos 5, and Claude Opus 4.8. This feature can be accessed via the Claude API, Claude in Amazon Bedrock, and Claude on Vertex AI. Earlier notes indicating a beta status have been corrected.
Read the original announcement →
https://platform.claude.com/docs/en/release-notes/overview
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