Cognition Previews SWE-1.6, Claims 11% Gain Over SWE-1.5 on SWE-Bench Pro

Cognition previewed its ongoing SWE-1.6 training run, which scores 11% higher than SWE-1.5 on SWE-Bench Pro and runs at 950 tok/s.

The model is post-trained on the same pre-trained model as SWE-1.5, and the company is rolling out early access to a small group of users to gather feedback on behavior such as overthinking and excessive self-verification.

The company says training steps now run 6x faster than three months ago, with rollouts in NVFP4 precision.