Ampersand Model Effort Revealed: Long-Horizon Simulation Training Stack on Persimmon

saurabh_shah2 · x · 2026-10-21

Team members behind a new model effort called Ampersand (&) revealed they've built a training stack for very long-horizon simulations powered by Persimmon, with work remaining across systems, simulations, evals, algorithms, and products.

Related event: humans& launches Ampersand v0.1, a collaborator model trained on simulation feedback(13 posts)→

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