Mu by Microsoft is a new ~330M on-device SLM that runs on the NPU in Copilot+ PCs. It powers the new agent in Windows Settings, delivering high speed and efficiency for local AI tasks.
Hi everyone!
On-device AI is developing at an incredible pace lately. We keep seeing models that are smaller, yet more powerful, and specifically optimized for edge devices and chips. This is great news, especially for developers building privacy-focused applications or new AI hardware.
Microsoft's new model, Mu, is built for exactly this kind of on-device work. It's a small language model that runs locally on the NPU in Copilot+ PCs, and it's incredibly fast, powering the new agent in Windows Settings.
What’s really exciting here is that this is just the first step. Mu gets its capabilities through distillation from the larger Phi models. This signals a future where on-device AI can keep getting smarter without a huge increase in size.
It's seriously making me think it might be a very good time to get a Copilot+ PC.👀
Exciting times ahead with the new Microsoft Copilot and Mu! It’s amazing to see on-device AI becoming more capable and privacy-focused. The idea of running such a powerful model locally without compromising speed is impressive. How do you think this will impact the development of personalized AI apps in the future, especially in terms of performance and privacy?
About Mu on Product Hunt
“Fast, local AI comes to Windows Copilot+ PCs”
Mu launched on Product Hunt on June 24th, 2025 and earned 130 upvotes and 3 comments, placing #22 on the daily leaderboard. Mu by Microsoft is a new ~330M on-device SLM that runs on the NPU in Copilot+ PCs. It powers the new agent in Windows Settings, delivering high speed and efficiency for local AI tasks.
Mu was featured in PC (5.1k followers), Artificial Intelligence (468.9k followers) and Development (5.9k followers) on Product Hunt. Together, these topics include over 97.3k products, making this a competitive space to launch in.
Who hunted Mu?
Mu was hunted by Zac Zuo. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how Mu stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Zac Zuo