Microsoft AI said it finished pre-training MAI-Base-2, a mixture-of-experts model with 80 billion active and 2.8 trillion total parameters, trained on 16k GB200 chips over 38 days. CEO Mustafa Suleyman was reported telling staff internally that the model beats OpenAI's GPT-5.6 using about a quarter of the computing resources, but this comparison rests on private tests and OpenAI has not confirmed it. The model is still in post-training, and Microsoft plans to license its weights to partners through Foundry, though no release date, pricing, or public benchmarks have been given. MSFT rose 1.08% to $539.44 on October 15, then fell 0.47% after hours, a muted reaction. The article says the claim could create friction with OpenAI, in which Microsoft's stake is reportedly valued at $135 billion, while Azure growth remains the main driver of the stock.
Summary written by Upside AI from the original article. Read the source for full details.
Original headline: Microsoft’s AI Chief Says It Built a Better Model Than OpenAI’s With a Quarter of the Computing Power
Read the original on Yahoo Finance ↗
Related tickers and likely impact
MSFT
▲ Likely positiveMicrosoft
Relevance: medium
| Market | US stocks |
|---|---|
| Sector | Information Technology |
| Industry | Systems Software |
| Market cap | $4.0T |
| Close on 10/15/2026 | 539.44 |
| Change that session | +1.08% |
Impact is scored by AI from the headline and may be wrong. It is not investment advice.
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