Microsoft builds Windows 11 speed test in a day using agentic AI workflow
Microsoft added an integrated internet speed test to Windows 11’s Quick Settings, a feature that went from idea to working prototype in a single day. Windows Design and Research lead Marcus Ash said the design and build were driven by an agentic AI workflow that a single person guided in spare time, after President Pavan Davuluri asked Vice President of Product Design Diego Baca to look at the…
Key points
- Windows 11 added an integrated internet speed test built in a day using an agentic AI workflow.
- Prototype showed 31.5 Mbps download, 34.4 Mbps upload, 32 ms ping on build 26340.9767, matching Ookla results.
- Microsoft sees AI‑driven rapid prototyping as a model for future WinUI features like Clipchamp and Teams.
The prototype, shown in the October 23 Experimental build (26340.9767), runs the test without opening a browser and reports 31.5 Mbps download, 34.4 Mbps upload and 32 ms ping in under 30 seconds, matching measurements on two Android devices. The test uses Speedtest by Ookla and required enabling a feature flag. Ash noted that while the AI tools and models were not disclosed, the rapid turnaround suggests AI could accelerate other Windows components, such as Clipchamp, the Weather app, and Teams, especially as WinUI 3 continues to mature.
“Without AI slop”: Microsoft says AI built a Windows 11 feature, and it just needed a human in their spare time
windowslatest.com · 31 October 2026
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