SWE-2
SWE-2 is an app-only language model from Cognition, released September 10, 2026. Its makers disclosed about 2.8T parameters.
Today 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.
Check it against your own PC →
Lab
Cognition
Released
September 10, 2026
Weights
app-only
Parameters
2.8T disclosed
Context
–
Price / M tokens
–
Epoch ECI
not yet rated
Benchmark results
Epoch AI has not published results for SWE-2 yet. New models are usually evaluated within days to weeks.