4 novinky
Mid-conversation system messages are now GA without a beta header on Claude Fable 5, Mythos 5, and Opus 4.8 across the Claude API, Amazon Bedrock, and Google Cloud. Updating system instructions mid-conversation no longer invalidates cache prefixes.
Fable 5 is the first public-facing version of the Mythos generation; top-tier software engineering, knowledge work and vision, with hard safety guardrails.
The new Bugbot cuts review time from ~5 minutes to ~90 seconds, finds 10 % more bugs and costs 22 % less per run; adds a /review pre-push flow.
Cursor added interactive canvas support for cloud agents with shareable links, a beta Environments API for programmatic environment management, and made large environments 5x faster to load with support for up to 300 repositories.
