Cognition Releases SWE-2: A Kimi K3 Post-Trained Coding Model That Matches Fable 5.1 on FrontierCode at 64% Lower Cost

Cognition released SWE-2, a coding model post-trained from Moonshot AI's Kimi K3, achieving near-parity with Fable 5.1 on FrontierCode at 64% lower cost. SWE-2 features selectable reasoning-effort levels trained in one reinforcement learning run and runs only within Cognition's Devin platform.