The Stack
The Stack — September 11, 2026
15:19
Daily Tech Briefing
AI & Machine Learning
Cognition launches SWE-2, a coding model built on a third-party base. The model is post-trained on the Kimi K3 base (2.8T total parameters, ~104B active) and claims 50.0% on FrontierCode 1.1 Main — one point behind a leading frontier model at a claimed 64% lower cost — plus 92.8 on Terminal-Bench 2.1. The tell is in the long-horizon numbers: SWE-2…