SWE-2 Flash
Cognition · 2026-11-04 · 276B parameters
Cognition's small software engineering model, released November 4, 2026 and post-trained from Thinking Machines' Inkling-Small, with mid-training added before reinforcement learning. Cognition reports 276B total and 12B active parameters, and says it runs at one-fifth the price and three times the speed of SWE-2. It's available in Devin Desktop and Devin CLI, free through November 30, and Cognition isn't publishing the weights.
Benchmark scores
| Benchmark | Score | Source |
|---|---|---|
| Capability | 161.7 | Capability · atlas |
| DeepSWE v1.1 | 60.1 | SWE-2 Flash launch post · Cognition |
| FrontierCode 1.1 Main - Score | 45.5 | SWE-2 Flash launch post · Cognition |
| FrontierCode 2.0 - Score | 24.0 | Cognition FrontierCode 2.0 leaderboard (snapshot 2026-11-04) · Cognition |
| SWE Atlas - Codebase QnA | 50.0 | SWE-2 Flash launch post · Cognition |
| SWE-Bench Pro V2 — Hard | 89.9 | SWE-2 Flash launch post · Cognition |
| Terminal-Bench 2.1 | 89.2 | SWE-2 Flash launch post · Cognition |
| Terminal-Bench 4.0 | 20.0 | SWE-2 Flash launch post · Cognition |