Strix vs Cobalt:Autonomous Pentesting, Compared
Two ways to pentest your apps and APIs — and prove what's actually exploitable.
One is a human-led pentest-as-a-service marketplace. The other is an open-source autonomous pentester.
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The verdict
Cobalt is the superior choice for a narrower job: scheduled, human-delivered pentests that produce auditor-ready SOC 2, PCI DSS, and ISO 27001 reports from its vetted Cobalt Core community. Strix excels as the autonomous pentester engineering teams own — a 25,000+ star open-source engine you can self-host and run with your own LLM, chaining exploits across code, APIs, infrastructure, and cloud, and shipping validated findings as merge-ready fix PRs inside CI/CD — starting free.
Strix vs Cobalt at a glance
How the open-source autonomous pentester compares to the human-led pentest-as-a-service marketplace.
| Capability | Strix | Cobalt |
|---|---|---|
| Delivery model | Open-source platform + hosted SaaS, autonomous agents | Human-led PTaaS — scheduled tests by the Cobalt Core community |
| Testing cadence | Continuous and on-demand, runs in CI/CD and pull requests | Point-in-time engagements scheduled per pentest (launch in ~24 hrs) |
| Who does the testing | Autonomous AI agents, repeatable and always-on | 400+ vetted human pentesters matched to your stack |
| Starting price | Free open-source core; usage-based hosted, no credit card | Web app pentests from ~$8,500; mid-market programs commonly $96,000+/yr |
| Exploit-validated findings with PoCs | ✓ | ✓ |
| Auto-fix with merge-ready PRs | ✓ | — |
| Open-source & self-hostable engine | ✓ | — |
| Bring your own LLM (including local models) | ✓ | — |
| Coverage | Code, APIs, web apps, infrastructure, and cloud | Web, mobile, API, network, and cloud pentests by engagement scope |
| Auditor-ready compliance reports (SOC 2, PCI, ISO 27001) | ✓ | ✓ |
| Best for | Teams wanting continuous, developer-native autonomous testing | Teams needing scheduled, human-signed compliance pentests |
Continuous and yours to run — not a scheduled engagement
Cobalt delivers point-in-time pentests through its own platform and human community. Strix is an open engine you run inside your own workflow, on your own terms.
Own the engine
Strix: Open-source and self-hostable — read the code, extend it, and run the full pentest engine inside your own infrastructure, even air-gapped.
Cobalt: Vendor-run SaaS; tests are delivered through Cobalt's platform and there is no self-hostable engine.
Always-on, not point-in-time
Strix: Agents test continuously and on every pull request, so new code is exploited and fixed before it ships.
Cobalt: Pentests are scheduled engagements measured in credits (1 credit = 8 hours); coverage between tests depends on rescheduling.
Fixes, not just findings
Strix: Every validated finding ships with a merge-ready fix PR in your repo, so remediation lands in the dev workflow.
Cobalt: Findings stream into Jira/GitHub with retests, but remediation is left to your engineers — no auto-fix PRs.
Where each platform wins
Both are real autonomous pentesters. The difference is who they are built for.
Strix key strengths
Open-source core: A 25,000+ star project you can read, run locally, self-host, and extend.
Continuous autonomous testing: Agents run on demand and on every pull request, not just during a scheduled engagement window.
Full-stack coverage: Code, APIs, web apps, infrastructure, and cloud tested from one autonomous pentester.
Workflow-native with auto-fix: GitHub Actions and pull-request testing block vulnerable code, and every finding ships with a merge-ready fix PR.
Free to start: Begin with the open-source core or usage-based hosted plan with no credit card — no per-engagement minimum.
When to choose Strix
Choose Strix if you want continuous, developer-native autonomous pentesting you own — open-source, self-hostable, BYO-LLM, full-stack, and shipping merge-ready fixes inside CI/CD.
Cobalt key strengths
Human-led PTaaS: A vetted Cobalt Core community of 400+ pentesters matched to your stack for manual, expert-driven testing.
Auditor-ready compliance reports: Mature SOC 2, PCI DSS, and ISO 27001 report templates accepted by auditors, with free retests within 6 months.
Fast time-to-engagement: Launch a scheduled pentest in as little as 24 hours with real-time collaboration via Slack and the platform.
When to choose Cobalt
Choose Cobalt if you need a scheduled, human-delivered pentest that produces an auditor-ready SOC 2, PCI DSS, or ISO 27001 report signed off by vetted testers.
Frequently asked questions
Common questions about choosing between Strix and Cobalt.
Is Strix better than Cobalt?
Strix is better for engineering teams that want continuous, open-source autonomous pentesting embedded in CI/CD with merge-ready fixes, while Cobalt is better for teams that need scheduled, human-delivered pentests producing auditor-ready SOC 2, PCI DSS, or ISO 27001 reports.
What is the difference between Strix and Cobalt?
Strix is an open-source autonomous pentester whose AI agents chain exploits across code, APIs, infrastructure, and cloud continuously and ship fix PRs. Cobalt is a pentest-as-a-service marketplace where vetted human testers run scheduled, point-in-time engagements delivered through Cobalt's platform.
Is Strix cheaper than Cobalt?
Strix offers a free open-source core and usage-based hosted pricing with no credit card to start. Cobalt's web app pentests start around $8,500 per engagement and mid-market programs commonly reach $96,000 per year, so Strix has a far lower entry cost for most teams.
Can Strix replace Cobalt?
Strix can replace Cobalt for teams that want continuous, workflow-embedded autonomous testing and self-hosting. Organizations that specifically need a human-signed compliance engagement with auditor-accepted reports may still use Cobalt for that attestation.
Does Cobalt use human pentesters or automation?
Cobalt is human-led pentest-as-a-service: its Cobalt Core community of 400+ vetted pentesters performs the testing, assisted by AI recon, billed in credits where one credit equals eight testing hours. Strix runs autonomous AI agents that test continuously without scheduling a human engagement.
Who should use Cobalt instead of Strix?
Mid-market and compliance-driven teams that need a scheduled, human-delivered pentest with an auditor-ready SOC 2, PCI DSS, or ISO 27001 report — and that prefer a vendor-run engagement over operating their own platform — are a good fit for Cobalt.
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