Models New
Cognition releases SWE-2 Flash, a cheaper coding model for Devin, and keeps its weights behind a vetting programme
Published:
Cognition, the maker of the Devin coding agent, released SWE-2 Flash on Wednesday in Devin Desktop and the Devin CLI. It says the model runs at one-fifth the price and three times the speed of its larger SWE-2, and its launch page lists it as free through 30 November.
SWE-2 Flash is built on Thinking Machines' open-weight Inkling-Small, which has 276 billion total and 12 billion active parameters. Cognition added a mid-training stage before reinforcement learning and says this raised Terminal-Bench 4.0 from 0.9% to 20.0% and FrontierCode 2.0 from 3.2% to 24.0% over the base model, and that SWE-2 Flash beats all American open-weight models on leading evaluations.
Cognition also trained the model for security work, lifting its ExploitBench score from 11.3% to 34.8% by its account. Citing cyber risk, it is not publishing the weights and is building a programme to share them with trusted industry partners and research labs, with details promised in a few weeks.
Caveat. All benchmark figures are Cognition's own, and its comparison covers only American open-weight models. The weight-sharing programme has not been described in detail.
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