Custom agent harnesses are losing their edge as models train on official ones
pvncher · x · 2026-10-06
pvncher argues that tinkering with custom agent harnesses in fall 2026 yields far less than a year ago: frontier lab harnesses aren't perfect, but models are explicitly trained to use them well, making it hard to outperform that pairing with your own setup.
Related event: The Payoff of Tuning Custom Agent Harnesses Is Fading(2 posts)→
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