Changelog
What's NEW in Lume
Updates, changes, and improvements at Lume.
2026-08-07
v1.4.9Lume IDE
- The agent now knows which terminals are busy and what is running in them, so it no longer restarts a development server that is already up.
- Reasoning is now shown for models that provide it.
- Prompt caching now applies consistently, lowering the cost of every message in a conversation.
- Fixed an issue where a command's output could be repeated many times in the chat card when a program redrew its progress display.
- Fixed an issue where switching off the Edit tool group for an agent did not stop it from modifying files.
- Built-in tool groups can no longer be switched off for the built-in Agent.
- Corrected the sandbox restrictions reported to the agent.
- Fixed an issue where edits spanning several lines could fail on Windows.
- Fixed the chat becoming slow while a long build was running.
- Fixed conversations that appeared to hang after the response had already finished.
- Fixed the preview opening before the local server was ready to answer.
- Fixed known issues.