Cognition SWE-2 Flash
A smaller, faster coding model for Devin built on Thinking Machines' Inkling-Small, running 3x faster at one-fifth the price of SWE-2, free in Devin through Nov 30.
Why it matters
First coding model trained with a mid-training stage before RL, lifting Terminal-Bench 4.0 from 0.9% (base model) to 20.0%; weights deliberately withheld over cybersecurity concerns after ExploitBench jumped to 34.8%.
What you could build with it
An indie developer could run routine engineering chores — code review, documentation updates, and small feature work — through a cheap, fast coding agent in Devin, reserving the flagship model only for hard debugging.
Does it hold up?
Usable today inside Devin Desktop and CLI with free access through Nov 30, but all benchmarks are Cognition's own and weights are not public, so independent verification is pending.
Built with Cognition SWE-2 Flash
- Cognition Launches SWE-2 Flash for Faster, Lower-Cost Coding Agentsarticle · Independent writeup on the speed/price claims, benchmark trade-offs, and the withheld weights.
- Cognition adds a lower-priced coding model to Devin, keeping its weights privatearticle · Writeup explaining why the base model's open weights do not mean SWE-2 Flash itself is downloadable.
Learn more
First spotted on article: source.
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