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Compaction does not work after changing models sometimes #6474
Description
Description
seems like when i change model to perform compaction-only sometimes it doesn't do anything and gets stuck in this state.
if i try to run again, returns an error:
messages.1: all messages must have non-empty content except for the optional final assistant message
OpenCode version
1.0.218
Steps to reproduce
- enter prompt in
buildmode - change model after some time
- type
/compactcommand - see that compaction doesn't work
Screenshot and/or share link
No response
Operating System
Ubuntu 24.04.3 LTS
Terminal
Alacritty
Activity
[-]Compaction does not work after changing models[/-][+]Compaction does not work after changing models sometimes[/+]github-actions commentedon Dec 30, 2025
This issue might be a duplicate of existing issues. Please check:
The common thread appears to be compaction failures related to message structure and/or model switching. #6446 in particular has detailed root cause analysis that might apply to your situation.
Feel free to ignore if none of these address your specific case.
esau-morais commentedon Dec 30, 2025
seems to be related to #6446, closing