Post-training long-horizon agents may work with short tasks and an 8–32x harness
omarsar0 · x · 2026-07-21
A useful post-training insight for long-horizon agents:
- You may not need to train on long-horizon rollouts directly.
- Instead, train on short tasks where rewards are cheap and verification is easy.
- Then let the harness extend that training signal 8–32x further.
The core idea is to decouple difficult long-horizon credit assignment from the actual training setup by using a scaffold that can carry the task much farther.
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