Fable 5.2 digital twin nails real-robot rollout, aiming for sim RL training and evals
DominiqueCAPaul · x · 2026-11-12
Right after Fable 5.2's release, jarothschild built a digital twin of a real robot: the sim rollout replaying the same joint targets matches the physical robot almost perfectly. The goal is to run RL training and evaluations in sim for an actuator unboxing project. The author admits underestimating the challenge and documented the process; the next step is testing whether the sim holds up for evals and even training.
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