# Sam Altman Memo: OpenAI's Next Model Has Finished Pretraining, Safety Team Restructured

_Wednesday, March 25, 2026 at 6:08 AM EDT · AI · Latest · Tier 1 — Major_

Sam Altman confirmed in an internal memo that OpenAI's next flagship model has completed pretraining and entered the post-training phase. The memo also disclosed structural changes to the safety team.

The completion of pretraining is a significant milestone, as it marks the point where the model's core capabilities are established before fine-tuning, alignment, and safety evaluation. The safety team restructuring, announced alongside the model update, comes as OpenAI faces ongoing scrutiny over its approach to AI safety research and governance.

## Sources

- Techmeme

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Retrieved: 2026-05-10T02:30:43.536Z
Publisher: Tech & Business (techandbusiness.org)