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Fast, Low-Cost Vulnerability Scanner

Depthfirst's researchers built a vulnerability scanner using Jev, a classifier that outputs probabilities rather than generating tokens. The scanner costs two cents per scan and completes a scan in around two seconds.

View on X costtwo cents per scantimearound two seconds
depthfirstdepthfirst@depthfirstlabs๐•
Our researchers built a vulnerability scanner that costs two cents per scan and completes a scan in around two seconds. The scanner is built with Jev, a classifier that outputs probabilities rather than generating tokens. On dfbench v1, our flagship model, it finds nearly as many real vulnerabilities as GPT-5.6 Luna, one of the most efficient models by cost per vulnerability. This new harness breaks vulnerability discovery into parallel tasks, making it possible to scan every package, repository, or commit quickly and at low cost before escalating the hardest cases to other frontier models o
Sep 25, 2026X postsView on X
On dfbench v1, Depthfirst's flagship model finds nearly as many real vulnerabilities as GPT-5.6 Luna, described as one of the most efficient models by cost per vulnerability. The harness divides vulnerability discovery into parallel tasks, allowing quick, low-cost scans of packages, repositories, or commits before escalating harder cases to other frontier models.

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