Anthropic researchers detail "model spec midtraining", which adds a stage between pretraining and fine-tuning to improve generalization from alignment training (Anthropic)
Anthropic describes model spec midtraining, a new training stage between pretraining and fine-tuning designed to improve how models generalize from alignment training.
Excerpt
<p><a href="https://www.techmeme.com/260506/p53#a260506p53" title="Techmeme permalink"><img height="12" src="http://www.techmeme.com/img/pml.png" style="border: none; padding: 0; margin: 0;" width="11" /></a> <a href="https://www.anthropic.com/">Anthropic</a>:<br />
<span style="font-size: 1.3em;"><b><a href="https://alignment.anthropic.com/2026/msm/">Anthropic researchers detail “model spec midtraining”, which adds a stage between pretraining and fine-tuning to improve generalization from alignment training</a></b></span> — Sara Price2, Samuel Marks2,†, Jon Kutasov2,† — 1Anthropic Fellows Program; 2Anthropic; †Equal advising</p>
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