1.7h of intervention data beats 21h of demos: finetuning π0.5 on manufacturing
DominiqueCAPaul · x · 2026-09-24
A team finetuned Physical Intelligence's π0.5 on a real manufacturing task and shared key findings:
- 1.7 hours of high-quality data with interventions beat 21 hours of pure demonstrations
- 4 hours of data across 5 scenes beat 4 hours in the eval scene by 30 percentage points
- Tuning RTC improved the same checkpoint from 76% to 93%
The takeaway: data quality and diversity matter more than volume.
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