Nine engineers. 1,211 pull requests in a day. Go behind the scenes of building Copilot Cowork for six lessons on engineering with agents, including how the team moved its runtime from Python to Rust while the product was live. commandline.microsoft.com/ho…
Lessons from building Copilot Cowork

Lessons from building Copilot Cowork

Plus a case study where we put everything together by moving our runtime from Python to Rust while live.

commandline.microsoft.com

Nov 11, 2026 · 1:08 AM UTC

12
34
4
260
19,646
RelevantRecentLikes
Go behind it..that wont work youre already there hiding haha
10
the event-ordering miss is the classic fixture gap, they only pin what someone thought to record. did ordering get added to the generators after?
214
Can we addeess the copilot slowness - all interfaces are slower than provider harnesses and also 3rd party ones like cursor, pi, amp, etc
240
Building AI-powered engineering tools at this scale requires exceptional teamwork and technical vision. Agent-driven development is clearly opening new possibilities for software engineering.
13
why shouldnt they use github copilot
30
Copilot is the part I keep coming back to here. What made you raise it now?
163
That means more than 100 PR / day . I am happy when my workflow delivers 20 a night. That also means MS has unlimited tokens.
157
How come none of those daily 1,211 pull requests make Copilot less shit? Where is the visible improvement?
367
Load more replies