At Microsoft’s 50th anniversary event in Redmond, Mustafa Suleyman made it clear: he’s changing how Microsoft measures AI success. The Microsoft AI successful sessions rate (SSR) is now his main focus for Copilot’s growth.
Suleyman leads Microsoft’s consumer and research AI division. While his team tracks user numbers and activity for Copilot, he concentrates on something deeper—quality. “I really, really focus the team on SSR, the rate of successful sessions,” he said in an interview.
In the past, software makers relied on usage time or task completion as signs of quality. But Suleyman believes those metrics are outdated. “Now, we get to learn from anonymized logs and extract the sentiment,” he explained.
To measure SSR, Microsoft uses an AI model that reviews conversations and user feedback. This system analyzes whether Copilot sessions end in success. According to Suleyman, SSR has improved sharply over the past four months. “That’s what we optimize for,” he added.
He did not share exact figures but emphasized how the metric shapes development. Suleyman joined Microsoft a year ago after co-founding Inflection AI. At the event, he stood alongside company legends like Bill Gates, Steve Ballmer, and current CEO Satya Nadella.
Microsoft has recently introduced new Copilot features to improve user experience. Last fall, it added a more friendly voice and tools to analyze web pages during browsing. On Friday, it unveiled even more updates. Users will now see personalized podcasts, smarter research tools, and a custom look that adjusts based on each conversation.
Suleyman also hinted at a more playful future for Copilot. “I would definitely go for something that was cutesy—like a little Furby-type thing,” he said, smiling.
By putting SSR at the center, Suleyman shifts the focus from quantity to quality. The Microsoft AI successful sessions rate gives his team a clear way to track satisfaction, not just usage. It marks a new era where AI learns, adapts, and improves with every interaction.
