The Most Important AI News This Week Is Getting Overlooked

Microsoft's MAI-2 and Meta's Muse Spark Open signal enterprises will soon have far more frontier-adjacent, fine-tunable model choices beyond OpenAI/Anthropic.

• MAI-2 base model: Microsoft's Mustafa Suleyman claims the new 2.8T-parameter, 80B-active MoE model beats GPT-5.6-sol's base using one-quarter the compute, trained on 16,000 GB200 Blackwell GPUs over 38 days.
• Frontier Tuning strategy: Microsoft pairs MAI-2 with a fine-tuning business letting enterprises own their intelligence layer, addressing data sovereignty concerns Satya Nadella has emphasized.

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