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The Model Memo

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Research

2 essays on research from The Model Memo, a free daily newsletter on AI.

Post-Training Eats Pretraining

Research

Post-Training Eats Pretraining

The most important capability gains of the last year didn't come from bigger models. They came from longer, weirder, more deliberate post-training.

June 12, 2026 · 9 min read

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