Horizon3.ai NodeZero (autonomous pentesting) vs Plerion Pleri (AI security engineer)
Quick answer
Horizon3.ai NodeZero (autonomous pentesting) (Horizon3.ai) and Plerion Pleri (AI security engineer) (Plerion) are both listed in the Security category of Agent Index.
They share no framework tags in our dataset.
This is not a ranking.
Horizon3.ai NodeZero (autonomous pentesting) (Horizon3.ai) and Plerion Pleri (AI security engineer) (Plerion) are both listed in the Security category of Agent Index. They share no framework tags in our dataset.
| Field |  Horizon3.ai NodeZero (autonomous pentesting) |  Plerion Pleri (AI security engineer) |
|---|---|---|
| Vendor | Horizon3.ai | Plerion |
| HQ | United States · North America | Australia · Australia and New Zealand |
| Primary category | Security | Security |
| Also listed in | Security | Security |
| Summary | Autonomous pentesting platform that runs unlimited self-directed internal, external, cloud, Kubernetes and AD pentests, plans attack paths, guides remediation and re-tests to verify fixes. | Sydney-based cloud and AI security platform with Pleri, an agent that investigates findings, checks real exploitability, raises fix PRs and Jira tickets, and follows each change through to merge. |
| Frameworks (vendor-stated) | — | — |
| Frameworks (vendor-claimed) | FedRAMP | — |
| Capabilities / tasks | pen test management, attack surface, exposure management, vulnerability management | cloud security, vulnerability management, remediation, exposure management |
| Pricing (as published) | Not published | Published estimator on plerion.com/pricing: a fixed monthly Plerion bill set by combined monthly AWS/Azure/GCP spend (example shown: $100,000–$130,000 cloud bill → about $3,100–$3,700/month, USD), all capabilities and the agent included; 'Start free' option. |
| Pricing model | quote | published-tiers |
| Primary source | https://horizon3.ai/nodezero/ | https://www.plerion.com/agents |
| Last checked | 2026-10-18 | 2026-10-18 |
| Official site | https://horizon3.ai/nodezero/ | https://www.plerion.com/agents |
FAQ (from this dataset)
What is the difference between Horizon3.ai NodeZero and Plerion Pleri?
Both are listed under Security. Shared tasks: exposure-management, vulnerability-management. Horizon3.ai NodeZero-only tasks: pen-test-management, attack-surface. Plerion Pleri-only tasks: cloud-security, remediation. Differences are from stored category and task tags, not a ranking.
Which one publishes pricing?
Horizon3.ai NodeZero (autonomous pentesting): Not published Plerion Pleri (AI security engineer): Published estimator on plerion.com/pricing: a fixed monthly Plerion bill set by combined monthly AWS/Azure/GCP spend (example shown: $100,000–$130,000 cloud bill → about $3,100–$3,700/month, USD), all capabilities and the agent included; 'Start free' option.
Where are Horizon3.ai NodeZero and Plerion Pleri headquartered?
Horizon3.ai NodeZero (autonomous pentesting) publishes HQ in United States. Plerion Pleri (AI security engineer) publishes HQ in Australia.
Also in this use case
Other verified listings that share a task tag or use-case group with Horizon3.ai NodeZero (autonomous pentesting) or Plerion Pleri (AI security engineer). 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.
- 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
Use-case comparisons
- Agentic pentesting AI agents — 33 listings (Autonomous or AI-assisted penetration testing, attack-surface testing and exploitable-path verification)
- Cloud security (CNAPP) AI agents — 9 listings (Cloud and container security posture, exposure and remediation)
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