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3h ago

Microsoft Debuts First In‑House AI Models With Early Copilot Rollout

The move signals a shift toward cost‑efficient, proprietary AI to reduce dependence on outside models.

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MAI Voice
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Overview

  • Microsoft introduced MAI‑Voice‑1 for speech and MAI‑1‑preview for text as its first internally developed foundation models.
  • MAI‑Voice‑1 generates a minute of audio in under a second on a single GPU and is already live in Copilot Daily and Podcasts, with trials available through Copilot Labs.
  • MAI‑1‑preview, Microsoft’s first end‑to‑end in‑house foundation model, is in public evaluation on LMArena and will begin powering select text use cases in Copilot in the coming weeks.
  • Microsoft says MAI‑1‑preview was trained on roughly 15,000 Nvidia H100 GPUs using a mixture‑of‑experts approach and efficiency techniques to stretch compute, and it currently ranks 13th for text tasks on LMArena.
  • The company reports an operational Nvidia GB200 cluster and a multi‑year roadmap, framing the effort as strategic diversification even as it maintains its extensive partnership with OpenAI.