Cognition launches SWE-2 coding AI model, achieving 50% on FrontierCode benchmark at 64% lower cost than rivals through multi-trillion-parameter reinforcement learning training.

Introducing SWE-2: Pushing the Pareto Frontier

By The Cognition Team09.10.26Today we’re introducing SWE-2, our most advanced coding model yet. It pushes the Pareto frontier of capability and cost, achieving 50.0% on FrontierCode 1.1 Main1, within one point of Fable 5.1 while being 64% cheaper.With SWE-2, we scaled RL to the multi-trillion-parameter regime for the first time, building on the SWE-1.72 training infrastructure and recipe. The key addition is an RL algorithm that trains all reasoning-effort levels in a single run, advancing the w...