Microsoft's MAI claims a state-of-the-art 3T-parameter base model — post-training still pending
From the AI digest for 2026-10-15
What happened: ~12:16 PM ET Oct 15, Satya Nadella RT'd Mustafa Suleyman: "We now have state-of-the-art pre-trained base models in the 3T-parameter weight class, built entirely in-house at MAI. Post-training results coming soon — stay tuned!" with a technical blog post (microsoft.ai/news/frontier-pre-training-at-microsoft-ai/).
What's genuinely new: A debut — no MAI frontier-pre-training storyline existed; the record's Microsoft coverage sat on silicon (Maia 300) and governance posture, not an in-house frontier-model line. The claim is pre-training only, asserted on the lab's own blog — announced, not shipped: no third-party benchmark or eval artifact appears in the window, and "state-of-the-art" is the lab's own modifier. Post-training results are explicitly still promised, not delivered.
Watch: The post-training results and what benchmarks they carry; independent eval placement for the MAI line; the exposure surface (Copilot, Azure) once a shipped artifact exists.
Links: Satya Nadella — RT Mustafa Suleyman (MAI 3T-parameter base models)