Study Reveals 'Handoff Tax' in Model Switching for Coding Agents
Roy Ganz · hf · 2026-08-27
This paper investigates the cost-quality trade-off when switching models in long-running coding agent tasks. It finds that escalating from low-cost to high-capability models recovers less than half the quality gap despite high costs, termed the 'handoff tax'. Downshifting offers better value. The impact of trajectory information on quality varies by direction.
Related event: AWS Paper Reveals 'Handoff Tax' in Agent Model Switching(2 posts)→
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