HEAD TO HEAD
Neo matched with Prompt Security (SentinelOne): agentic endpoint security compared
SHORT ANSWER
On our published weights Neo scores higher overall, 6.85 to 5.45 out of 10. Neo scores higher on stop before it runs, verdict range, capability rules and actor trail; Prompt Security scores higher on cloud and workspace reach and public proof; they tie on rollout path and named agent coverage. 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?
Neo
Approval holds and an agent-level audit chain
Rank 2 of 6 among agentic endpoint vendors
Prompt Security (SentinelOne)
SentinelOne (deal announced 5 August 2025; completion reported in September 2025)
SentinelOne Singularity estates
Rank 8 of 8 among broader AI security platforms
Which scores higher on each criterion?
| Criterion | Weight | Neo | Prompt Security (SentinelOne) | 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 | 6 / 10 Governs what agents and MCP servers can do; per-tool-call enforcement is not detailed. Source: SentinelOne: Prompt Security, securing AI · Read 27 Sep 2026 | Neo |
| 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 | 3 / 10 Documents 2 of six verdict types: Block or deny and Mask or modify. "Prevents prompt injection and data leakage; its browser extension inspects and redacts prompts." Source: SentinelOne: Prompt Security, securing AI · Read 27 Sep 2026 Source: Prompt Security blog: browser and endpoint sensors (updated 16 August 2026) · Read 11 Oct 2026 | Neo |
| 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 | 5 / 10 Maps agents and MCP servers and finds shadow MCP servers; capability rules are not itemized. Source: SentinelOne: Prompt Security, securing AI · 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 | 5 / 10 Agent versus person attribution is not described on the pages we read. Source: SentinelOne: Prompt Security, securing AI · 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 Two resident sensors, a browser extension and a dedicated AI endpoint agent, inside the SentinelOne Singularity Platform. Source: Prompt Security blog: browser and endpoint sensors (updated 16 August 2026) · Read 11 Oct 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 | 6 / 10 Covers homegrown AI apps from testing to runtime as well as employee and developer AI use. Source: SentinelOne: Prompt Security, securing AI · Read 27 Sep 2026 | Prompt Security |
| 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 | 5 / 10 Names 3 of the six agents we track: Claude Code, Cursor and GitHub Copilot. Source: SentinelOne: Prompt Security, securing AI · Read 27 Sep 2026 | Tie |
| 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 | 8 / 10 Backed by SentinelOne, which announced the acquisition on 5 August 2025; pricing not published. Source: SentinelOne press release: agreement to acquire Prompt Security (5 August 2025) · Read 27 Sep 2026 | Prompt Security |
Which verdicts does each document?
| Verdict type | Neo | Prompt Security (SentinelOne) |
|---|---|---|
| Block or deny | Documented | Documented |
| Ask a person | Documented | Not described |
| Alert or warn | Not described | Not described |
| 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
- Prompt Security (SentinelOne): "Prevents prompt injection and data leakage; its browser extension inspects and redacts prompts."
Source: SentinelOne: Prompt Security, securing AI · Read 27 Sep 2026
Source: Prompt Security blog: browser and endpoint sensors (updated 16 August 2026) · Read 11 Oct 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
Prompt Security (SentinelOne)
Two local sensors, a browser extension and a dedicated AI endpoint agent, built into the SentinelOne Singularity Platform.
Source: Prompt Security blog: browser and endpoint sensors (updated 16 August 2026) · Read 11 Oct 2026
Which agents does each name?
| Agent | Neo | Prompt Security (SentinelOne) |
|---|---|---|
| Claude Code | Named | Named |
| Cursor | Not named | Named |
| GitHub Copilot | Named | Named |
| OpenAI Codex | Named | Not named |
| Windsurf | Not named | Not named |
| Claude Desktop | Not named | Not named |
| Named | 3 of 6 | 3 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 Prompt Security (SentinelOne) if you need public proof and stop before it runs. Prompt Security (SentinelOne) is best for: SentinelOne Singularity estates.
Frequently asked questions
Which is better for agentic endpoint security, Neo or Prompt Security (SentinelOne)?
On our published weights Neo scores higher overall, 6.85 to 5.45 out of 10. See the criterion table above for where each scores higher.
Which stops an agent action before it runs more fully, Neo or Prompt Security (SentinelOne)?
Neo scores higher on stopping an action before it runs (8 to 6). Neo: Intercepts agent actions at the endpoint and allows, blocks or holds them for approval before they run; decision latency is not stated. Prompt Security (SentinelOne): Governs what agents and MCP servers can do; per-tool-call enforcement is not detailed.
Do Neo and Prompt Security (SentinelOne) publish prices?
Neo: not published. Neo publishes no pricing. Prompt Security (SentinelOne): not published. SentinelOne publishes no pricing for Prompt Security.