Microsoft's MAI-Base-2 blog source code leaks intermediate checkpoint validation losses

YouJiacheng · x · 2026-10-17

YouJiacheng spotted that the source code of the MAI-Base-2 blog embeds validation losses for intermediate checkpoints from both the ladder runs and the big run — a rare dump of in-training eval curves hidden in plain sight on a public page.

Related event: Microsoft MAI-Base-2 Blog Source Code Leaks Validation Loss Data(2 posts)→

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