slowbench
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One session, eighty days

Where agent context goes

A coding agent stopped answering for nineteen minutes. The investigation that followed found that context is not spent gradually on conversation — it goes in jumps, and the jumps come from a handful of commands nobody remembers running.

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    Agents9 min

    An 80-day agent session and the wall at the end of it

    The session had been compacted fifty times. Every compaction started from a full million tokens. Then one morning it stopped answering for nineteen minutes.