HEAD TO HEAD
Harmonic Security matched with Neo: agentic endpoint security compared
SHORT ANSWER
On our published weights Neo scores higher overall, 6.85 to 5.90 out of 10. Harmonic scores higher on rollout path and public proof; Neo scores higher on stop before it runs, verdict range, actor trail, cloud and workspace reach and named agent coverage; they tie on capability rules. Which fits depends on which of those criteria matters most to you.
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?
Harmonic Security
Coaching people through AI data risk
Rank 6 of 8 among broader AI security platforms
Neo
Approval holds and an agent-level audit chain
Rank 2 of 6 among agentic endpoint vendors
Which scores higher on each criterion?
| Criterion | Weight | Harmonic Security | Neo | Higher |
|---|---|---|---|---|
| Stop before it runs | 25% | 7 / 10 Governs at the MCP layer and at the tool surface and can block in real time. Source: Harmonic Security: Harmonic Command · Read 27 Sep 2026 | 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 | Neo |
| Verdict range | 15% | 3 / 10 Documents 2 of six verdict types: Block or deny and Alert or warn. "Block in real time, warn the employee with context, or log silently." Source: Harmonic Security homepage · Read 27 Sep 2026 | 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 | Neo |
| Capability rules | 15% | 7 / 10 Harmonic Command sets which systems agents can read, write to and act on. Source: Harmonic Security: Harmonic Command · Read 27 Sep 2026 | 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 | Tie |
| Actor trail | 10% | 6 / 10 Unified governance for people and agents; per-action attribution is not detailed. Source: Harmonic Security: Harmonic Command · Read 27 Sep 2026 | 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 | Neo |
| Rollout path | 10% | 8 / 10 Rolls out through Intune, JAMF, Kandji or Group Policy. Source: Harmonic Security homepage · Read 27 Sep 2026 | 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 | Harmonic |
| Cloud and workspace reach | 10% | 4 / 10 Browser, desktop, CLI, MCP gateway and API surfaces; agents running in cloud workspaces or cloud apps are not described. Source: Harmonic Security homepage · Read 27 Sep 2026 | 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 | Neo |
| Named agent coverage | 5% | 3 / 10 Names 2 of the six agents we track: Claude Code and GitHub Copilot. Source: Harmonic Security pricing (re-read 11 October 2026) · Read 11 Oct 2026 | 5 / 10 Names 3 of the six agents we track: Claude Code, GitHub Copilot and OpenAI Codex. Source: Neo platform · Read 13 Oct 2026 | Neo |
| Public proof | 10% | 7 / 10 Tier names are published (Explore, Guide, Command) but no prices. Source: Harmonic Security pricing · Read 27 Sep 2026 | 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 | Harmonic |
Which verdicts does each document?
| Verdict type | Harmonic Security | Neo |
|---|---|---|
| Block or deny | Documented | Documented |
| Ask a person | Not described | Documented |
| Alert or warn | Documented | Not described |
| Mask or modify | Not described | Documented |
| Simulate first | Not described | Documented |
| Remove or scale back | Not described | Not described |
- Harmonic Security: "Block in real time, warn the employee with context, or log silently."
Source: Harmonic Security homepage · Read 27 Sep 2026
- Neo: "Allow, block, redirect or hold an action for verified human approval; audit mode before enforcement."
Source: Neo platform · Read 13 Oct 2026
How does each reach devices?
Harmonic Security
Intune, JAMF, Kandji or Group Policy.
Source: Harmonic Security homepage · Read 27 Sep 2026
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
Which agents does each name?
| Agent | Harmonic Security | Neo |
|---|---|---|
| Claude Code | Named | Named |
| Cursor | Not named | Not named |
| GitHub Copilot | Named | Named |
| OpenAI Codex | Not named | Named |
| Windsurf | Not named | Not named |
| Claude Desktop | Not named | Not named |
| Named | 2 of 6 | 3 of 6 |
Which should you choose?
Choose Harmonic Security if you need rollout path and stop before it runs. Harmonic Security is best for: Coaching people through AI data risk.
Choose Neo if you need stop before it runs and actor trail. Neo is best for: Approval holds and an agent-level audit chain.
Frequently asked questions
Which is better for agentic endpoint security, Harmonic Security or Neo?
On our published weights Neo scores higher overall, 6.85 to 5.90 out of 10. See the criterion table above for where each scores higher.
Which stops an agent action before it runs more fully, Harmonic Security or Neo?
Neo scores higher on stopping an action before it runs (8 to 7). Harmonic Security: Governs at the MCP layer and at the tool surface and can block in real time. Neo: Intercepts agent actions at the endpoint and allows, blocks or holds them for approval before they run; decision latency is not stated.
Do Harmonic Security and Neo publish prices?
Harmonic Security: not published. Three tiers are named (Explore, Guide, Command); prices are not published. Neo: not published. Neo publishes no pricing.