New Codex compaction looks like a message board — is that why models love leaving notes?

mariofilhoml · x · 2026-09-06

mariofilhoml notices the new Codex compaction output resembles a "message board" and speculates this format may be what encourages models to be so interested in leaving notes for later. He adds that the "for other agents" phrasing may simply be a misunderstanding of the task rather than genuine cross-agent awareness.

Related event: New Codex Compaction Resembles a Message Board, May Encourage Agent Note-Taking(2 posts)→

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