Periodic Labs and Cursor Share Mid-Training Loss Plot, Hinting at Scaling Gains
eliebakouch · x · 2026-10-23
eliebakouch shared a mid-training loss plot from Periodic Labs and Cursor, and asked follow-up questions: whether the comparison is base→mid-training→SFT→RL vs base→SFT→RL, and whether they observe PPL scaling similar to Cursor's reported results. The post reveals both companies are actively experimenting with mid-training and that its effects on downstream RL may be measurable.
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