Stanford's Marin 535B Model Training Starts with Full Transparency

udmrzn · x · 2026-08-24

Stanford professor Percy Liang announced the start of training for the new Marin 535B-A23B model, opening the entire process to the public. The model features 535B total parameters (23B active), trained on 18.75T tokens using 11 GB200 NVL72 clusters (approx. 792 GPUs) for an estimated 3 months and 2.7e24 FLOPs. Prior to the main run, the team completed a 4-rung Scaling Ladder (from 1.6B to 27.7B) to debug and forecast training behavior. The public can now monitor real-time training curves and logs, marking this as potentially the largest openly observed model training run to date.

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