Marin's 535B pretraining passes 80%, loss runs below scaling-ladder forecasts

dlwh · x · 2026-10-24

Marin's 535B model (Hero 535B-A23B) is now over 80% through pretraining. Observed held-out loss is tracking below the scaling-ladder forecasts; a sharp drop coincides with the planned 4K→16K context switch, which the team admits makes the comparison somewhat unfair, so checkpoints will be re-evaluated at 4K. Loss currently stands at 1.528 at step 314,999.

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