CliffCompaction cuts long-horizon coding agent cost by up to 50%

Sources: paper
Summary: The CliffCompaction preprint reports up to 50% cost reduction on long-horizon coding agent runs. The method only truncates or drops context and never rewrites it. The authors ship a scaffold-agnostic API proxy usable with Claude Code and Codex.
Why it matters: A team already paying for long agent runs could test the saving without changing its scaffold, if the figure survives an outside harness.
Follow-up: Watch for independent reproduction of the 50% figure outside the authors' own harness.