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SWE-2

ECI
N/A
Cognition
Sep. 10, 2026
Closed weights

SWE-2 is a closed-weights model from Cognition, released September 10, 2026.

SWE-2 vs select alternatives

DomainBenchmark
SWE-2
Cognition
Sep. 10, 2026
Closed weights
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Sep. 3, 2026
Closed weights
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Sep. 1, 2026
Closed weights
Moonshot
Jul. 16, 2026
Open weights
Software engineering
FrontierCodeBest score 55%
50%
53%
51%
44%

Model metadata