DIY vs managed, at increasing scan frequency

Same app count and test-case depth, only scans/year changes. Continuous (CI-integrated) scanning is where DIY triage labor usually overtakes a flat SaaS subscription.

Scans/app/yrDIY annualManaged SaaS annualCheaper

Where the DIY cost actually comes from

Open-source adversarial scanners like NVIDIA Garak and Microsoft PyRIT are free to license, which makes "DIY red-teaming" look like a rounding error next to a managed subscription. It isn't, because the license fee was never the cost. Every scan sends hundreds or thousands of attack prompts through the target model — that's the compute line, usually the smallest of the three. Every one of those results then has to be reviewed by a human to separate a real jailbreak from a false positive, and that triage line scales with test-case count and scan frequency in a way the compute line doesn't. The setup line — building the harness, wiring it into CI, mapping attack categories to your app's actual risk surface — is mostly one-time per app, but it's real hours at an engineer's fully-loaded rate, not free.

Managed SaaS platforms fold all three into one line item: a maintained attack library, a triage-reducing dashboard, and no setup hours. That's worth a real premium at low scan volume, where DIY's fixed setup cost dominates. The crossover happens as scan frequency climbs toward continuous/CI-integrated testing — at that point DIY's triage labor, which the tool doesn't do for you, compounds every deployment, while a flat monthly SaaS fee doesn't move. Run your own app count and triage-minutes-per-case through the table above rather than assuming either model wins by default.

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