Microsoft skipped OpenAI’s decision model and built its own on Alibaba’s Qwen
Microsoft on Friday launched Microsoft-Decision-1 in Foundry, three days after OpenAI opened its Decisions API to every developer in public The post Microsoft skipped OpenAI’s decision model and built its own on Alibaba’s Qwen appeared first on The New Stack .
On October 9, 2026, Microsoft launched its own decision model called Microsoft-Decision-1, three days after OpenAI opened its Decisions API to developers. Rather than using OpenAI's decision model, Microsoft post-trained its new model on Alibaba's Qwen3.5-9B. The new model costs $0.042 per million input tokens with free output, similar to TypeSafe's Jev, and Microsoft plans to rebase it on its own MAI models and OpenAI's models in the future.
Microsoft announced the launch on X, stating that the model delivers top performance on structured decision tasks and is already being tested across Microsoft for various applications. The model is more than 14 times faster than GPT-6 Sol and 46 times more consistent in Microsoft Discovery, but it may have limitations in handling images and is not fully compatible with the System One API used by other competitors.
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