Co-Brain Questionnaire Agent vs Vulnetic Sable
Quick answer
Co-Brain Questionnaire Agent (security questionnaire automation) (Co-Brain (Co-Brain GmbH)) and Vulnetic Sable (AI pentesting agent) (Vulnetic (Vulnetic Inc.)) are both listed in the Security category of Agent Index.
They share no framework tags in our dataset.
This is not a ranking.
Co-Brain Questionnaire Agent (security questionnaire automation) (Co-Brain (Co-Brain GmbH)) and Vulnetic Sable (AI pentesting agent) (Vulnetic (Vulnetic Inc.)) are both listed in the Security category of Agent Index. They share no framework tags in our dataset. Only Co-Brain Questionnaire Agent (security questionnaire automation) is tagged for DORA.
| Field |  Co-Brain Questionnaire Agent (security questionnaire automation) |  Vulnetic Sable (AI pentesting agent) |
|---|---|---|
| Vendor | Co-Brain (Co-Brain GmbH) | Vulnetic (Vulnetic Inc.) |
| HQ | Germany · Europe | United States · North America |
| Primary category | Security | Security |
| Also listed in | Security, Compliance, Risk | Security |
| Summary | German agent that completes incoming security questionnaires (vendor assessments, TISAX, ISO 27001, DORA) in Excel, PDF, Word or vendor portals from the customer's policies, certificates and past answers, with a source citation on every answer, consistent answers to re-worded questions, expert routing and team approval. | Agentic pentesting agent for internal security teams and MSSPs. Sable plans and executes authorised tests against web applications, APIs, internal networks and Active Directory, runs real tools, proves impact with reproducible evidence and exploit traces, and supports targeted retests after remediation; teams steer it in plain language and can approve every command or let it run fully autonomously. |
| Frameworks (vendor-stated) | DORA | — |
| Frameworks (vendor-claimed) | TISAX, ISO 27001, DORA, GDPR | — |
| Capabilities / tasks | questionnaire automation, workflow automation | pen test management, vulnerability management |
| Pricing (as published) | Not published | Not published on the pages we could read on 2026-10-21 (check the vendor pricing section) |
| Pricing model | quote | quote |
| Primary source | https://co-brain.ai/en/questionnaire-agent | https://www.vulnetic.ai/ai-pentesting-agent |
| Last checked | 2026-10-19 | 2026-10-21 |
| Official site | https://co-brain.ai/en/questionnaire-agent | https://www.vulnetic.ai/ai-pentesting-agent |
FAQ (from this dataset)
What is the difference between Co-Brain Questionnaire Agent and Vulnetic Sable?
Both are listed under Security. They share no task tags in this dataset. Co-Brain Questionnaire Agent-only tasks: questionnaire-automation, workflow-automation. Vulnetic Sable-only tasks: pen-test-management, vulnerability-management. Differences are from stored category and task tags, not a ranking.
Which one publishes pricing?
Co-Brain Questionnaire Agent (security questionnaire automation): Not published Vulnetic Sable (AI pentesting agent): Not published on the pages we could read on 2026-10-21 (check the vendor pricing section)
Where are Co-Brain Questionnaire Agent and Vulnetic Sable headquartered?
Co-Brain Questionnaire Agent (security questionnaire automation) publishes HQ in Germany. Vulnetic Sable (AI pentesting agent) publishes HQ in United States.
Also in this use case
Other verified listings that share a task tag or use-case group with Co-Brain Questionnaire Agent (security questionnaire automation) or Vulnetic Sable (AI pentesting agent). Open a pair page or the use-case table — this is not a ranking.
- Amnify security agents (agent-driven code audit, AI pentesting, PR review and autofix pull requests) — German AppSec product from Düsseldorf: a team of agents audits repositories (SAST, secrets, SCA, IaC, CI/CD) and cloud accounts, triages signals so only confirmed findings surface, pentests running apps inside a verified scope with a separate agent reproducing every finding, reviews pull requests with a merge-blocking status check, and opens fix pull requests that run your tests but never merge themselves.
- Covasant TPRM (agentic third-party risk management) — Third-party risk product from Hyderabad-headquartered Covasant. Purpose-built AI agents onboard vendors through due-diligence workflows, chase vendors who are slow to respond, keep watching news, sanctions and financial data, and, when risk thresholds break, open remediation workflows, track vendor responses, escalate unresolved issues and produce DORA, SOX and NIST reporting packages.
- noze CyberAgent (AI agent for continuous attack-surface monitoring, automated validation pentesting and NIS2 evidence) — Italian agent for mid-sized companies and NIS2 entities without an in-house SOC: after verifying domain control it continuously discovers assets and assesses network, web apps and APIs, correlates findings with EPSS and CISA KEV, confirms exploitability with automated validation pentests, ranks risks by business impact and prepares NIS2, DORA and ISO 27001 reports; the team decides what to fix. · noze CyberAgent (AI agent for continuous attack-surface monitoring, automated validation pentesting and NIS2 evidence) pair comparison
- trail Governance Agents (GRC and AI governance agents) — Munich-based trail's Governance Agents run GRC busywork in the background: they read your project files and sources to collect and link evidence, assess controls, classify systems, run risk and vendor assessments and draft policies, proposing changes that a human approves before anything is written.
Use-case comparisons
- Agentic pentesting AI agents — 33 listings (Autonomous or AI-assisted penetration testing, attack-surface testing and exploitable-path verification)
- TPRM and vendor-risk AI agents — 40 listings (Third-party risk, vendor assessments, security ratings and questionnaire automation)
- Security questionnaire AI agents — 10 listings (Inbound security questionnaires, SIG/CAIQ-style responses and questionnaire automation)
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