HEAD TO HEAD
Neo matched with Onyx Security: agentic endpoint security compared
SHORT ANSWER
Neo and Onyx Security tie at 6.85 out of 10 on our published weights. Neo scores higher on capability rules, actor trail and named agent coverage; Onyx scores higher on cloud and workspace reach and public proof.
By The Agent Desk · Agentic Endpoint Compare · Published 2026-10-11
Desk research from public vendor pages, press releases and standards pages read on 27 September and 11 October 2026. Editorial assessment; we did not run the products.
How do they compare at a glance?
Neo
Approval holds and an agent-level audit chain
Rank 2 of 6 among agentic endpoint vendors
Onyx Security
Inline control with the widest set of verdicts
Rank 2 of 8 among broader AI security platforms
Which scores higher on each criterion?
| Criterion | Weight | Neo | Onyx Security | Higher |
|---|---|---|---|---|
| Stop before it runs | 25% | 8 / 10 Intercepts agent actions at the endpoint and allows, blocks or holds them for approval before they run; decision latency is not stated. Source: Neo homepage · Read 13 Oct 2026 | 8 / 10 Inspects every prompt, tool call and model response inline before acting on it. Source: Onyx Security: AI security platform · Read 27 Sep 2026 | Tie |
| Verdict range | 15% | 7 / 10 Documents 4 of six verdict types: Block or deny, Ask a person, Mask or modify and Simulate first. "Allow, block, redirect or hold an action for verified human approval; audit mode before enforcement." Source: Neo platform · Read 13 Oct 2026 | 7 / 10 Documents 4 of six verdict types: Block or deny, Ask a person, Alert or warn and Mask or modify. "Five actions: alert, block, mask, steer, or ask." Source: Onyx Security: AI security platform · Read 27 Sep 2026 | Tie |
| Capability rules | 15% | 7 / 10 Policies built with a built-in LLM, with examples such as Block secret reads and Hold exports over 10 MB, over an inventory of agents, models, skills, MCP servers and extensions. Source: Neo homepage · Read 13 Oct 2026 | 6 / 10 Agent posture covers misconfigurations, excessive permissions and credential handling; rules by capability type (shell, packages, cloud CLIs) are not itemized. Source: Onyx Security: AI security platform · Read 27 Sep 2026 | Neo |
| Actor trail | 10% | 8 / 10 Every action is tied to the human or agent that caused it, in what Neo calls an immutable audit chain. Source: Neo homepage · Read 13 Oct 2026 | 7 / 10 Agent identity and access governance is a named solution; per-action attribution detail is lighter than the leader. Source: Onyx Security homepage · Read 27 Sep 2026 | Neo |
| Rollout path | 10% | 6 / 10 A new lightweight endpoint sensor: no kernel module, no reboot, no OS hooks; OS support and MDM rollout are not stated. Source: Neo platform · Read 13 Oct 2026 | 6 / 10 Endpoint agents, browser extensions, APIs and gateways; the device component is resident software. Source: Onyx Security: AI security platform · Read 27 Sep 2026 | Tie |
| Cloud and workspace reach | 10% | 5 / 10 Names SaaS and desktop AI such as Slack AI, Notion AI and Salesforce Agentforce from the endpoint; agents in cloud workloads are not described. Source: Neo platform · Read 13 Oct 2026 | 9 / 10 Covers cloud workloads alongside browser AI, coding assistants, desktop agents and MCP servers, across SaaS, cloud, endpoint and code. Source: Onyx Security: AI security platform · Read 27 Sep 2026 | Onyx |
| Named agent coverage | 5% | 5 / 10 Names 3 of the six agents we track: Claude Code, GitHub Copilot and OpenAI Codex. Source: Neo platform · Read 13 Oct 2026 | 0 / 10 Names 0 of the six agents we track: none. Source: Onyx Security: AI security platform · Read 27 Sep 2026 | Neo |
| Public proof | 10% | 6 / 10 Came out of stealth on 20 July 2026 with $100M from Andreessen Horowitz and Bessemer; no documentation portal or pricing. Source: Neo news: launch with $100M (20 July 2026) · Read 13 Oct 2026 | 7 / 10 Series B of $113M announced 29 July 2026; SOC 2 Type II and ISO 27001 listed; pricing not published. Source: Onyx Security blog: $113M Series B (29 July 2026) · Read 27 Sep 2026 | Onyx |
Which verdicts does each document?
| Verdict type | Neo | Onyx Security |
|---|---|---|
| Block or deny | Documented | Documented |
| Ask a person | Documented | Documented |
| Alert or warn | Not described | Documented |
| Mask or modify | Documented | Documented |
| Simulate first | Documented | Not described |
| Remove or scale back | Not described | Not described |
- Neo: "Allow, block, redirect or hold an action for verified human approval; audit mode before enforcement."
Source: Neo platform · Read 13 Oct 2026
- Onyx Security: "Five actions: alert, block, mask, steer, or ask."
Source: Onyx Security: AI security platform · Read 27 Sep 2026
How does each reach devices?
Neo
A new lightweight endpoint sensor with no kernel module, no reboot and no OS hooks; OS support and MDM rollout are not stated.
Source: Neo platform · Read 13 Oct 2026
Onyx Security
Endpoint agents, browser extensions, APIs and gateways; Onyx says no SDK changes are needed.
Source: Onyx Security: AI security platform · Read 27 Sep 2026
Which agents does each name?
| Agent | Neo | Onyx Security |
|---|---|---|
| Claude Code | Named | Not named |
| Cursor | Not named | Not named |
| GitHub Copilot | Named | Not named |
| OpenAI Codex | Named | Not named |
| Windsurf | Not named | Not named |
| Claude Desktop | Not named | Not named |
| Named | 3 of 6 | 0 of 6 |
Which should you choose?
Choose Neo if you need stop before it runs and actor trail. Neo is best for: Approval holds and an agent-level audit chain.
Choose Onyx Security if you need cloud and workspace reach and stop before it runs. Onyx Security is best for: Inline control with the widest set of verdicts.
Frequently asked questions
Which is better for agentic endpoint security, Neo or Onyx Security?
Neo and Onyx Security tie at 6.85 out of 10 on our published weights. See the criterion table above for where each scores higher.
Which stops an agent action before it runs more fully, Neo or Onyx Security?
They tie at 8. Neo: Intercepts agent actions at the endpoint and allows, blocks or holds them for approval before they run; decision latency is not stated. Onyx Security: Inspects every prompt, tool call and model response inline before acting on it.
Do Neo and Onyx Security publish prices?
Neo: not published. Neo publishes no pricing. Onyx Security: not published. Onyx Security publishes no pricing.