Microsoft AI unveils 2.8 trillion-parameter model, claims efficiency gains

Investing.com -- Microsoft has completed pre-training a new AI model with 2.8 trillion total parameters, saying it outperformed every open-weight model it tested while requiring up to 12 times less computing power to match a leading rival. Still guessing which stocks will beat the market? Our AI portfolio updates monthly and is outperforming the S&P 500 by 118%. See this month's list » The model, MAI-Base-2, has 80 billion active parameters and uses a mixture-of-experts architecture that activates only a portion of its parameters for each task. Microsoft said its training approach was 4.2 to 12.3 times more compute-efficient than that of DeepSeek-V4-Pro-Base across four evaluations.