HEAD TO HEAD
CrowdStrike Falcon Guardian matched with Prompt Security (SentinelOne): agentic endpoint security compared
SHORT ANSWER
On our published weights CrowdStrike Falcon Guardian scores higher overall, 6.25 to 5.45 out of 10. Falcon Guardian scores higher on stop before it runs, actor trail, rollout path and cloud and workspace reach; Prompt Security scores higher on verdict range and named agent coverage; they tie on capability rules and public proof. 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?
CrowdStrike Falcon Guardian
CrowdStrike
AI agent controls inside the Falcon platform
Rank 3 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 | CrowdStrike Falcon Guardian | Prompt Security (SentinelOne) | Higher |
|---|---|---|---|---|
| Stop before it runs | 25% | 8 / 10 Connects to Claude Code's hook events to check and block prompts and tool activity as they happen, and returns allow or block before a Copilot Studio agent runs a tool; CrowdStrike cites 100 ms or less detection latency from internal benchmark testing. Source: CrowdStrike blog: Falcon AIDR protects Copilot Studio agents and Claude Code (30 July 2026) · 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 | Falcon Guardian |
| Verdict range | 15% | 2 / 10 Documents 1 of six verdict types: Block or deny. "Checks and blocks prompts and tool activity as they happen; automatic containment by blocking malicious agent behaviors." Source: CrowdStrike blog: Falcon AIDR protects Copilot Studio agents and Claude Code (30 July 2026) · Read 13 Oct 2026 Source: CrowdStrike blog: Falcon Guardian (1 September 2026) · 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 | Prompt Security |
| Capability rules | 15% | 5 / 10 Sets which supported AI agent types may run on managed endpoints, with policy assigned through Falcon host groups; rules by capability type are not itemized. Source: CrowdStrike blog: Falcon Guardian (1 September 2026) · 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 | Tie |
| Actor trail | 10% | 8 / 10 Ties Claude Code events to a specific session and user in Falcon Next-Gen SIEM, and links prompts, tool calls and MCP servers to identity and downstream execution. Source: CrowdStrike blog: Falcon AIDR protects Copilot Studio agents and Claude Code (30 July 2026) · 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 | Falcon Guardian |
| Rollout path | 10% | 7 / 10 Delivered through the Falcon sensor; Claude Code coverage is a settings-file entry with no agent to install. SACR (secondary) adds browser extensions, gateway integrations, an SDK and an MCP proxy. Source: CrowdStrike blog: Falcon AIDR protects Copilot Studio agents and Claude Code (30 July 2026) · 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 | Falcon Guardian |
| Cloud and workspace reach | 10% | 8 / 10 Secures AI agents from endpoint to cloud and SaaS, including Copilot Studio agents; the AI gateway is listed as coming soon. Source: CrowdStrike: Falcon Guardian (formerly AIDR) product page · 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 | Falcon Guardian |
| Named agent coverage | 5% | 2 / 10 Names 1 of the six agents we track: Claude Code. Source: CrowdStrike blog: Falcon AIDR protects Copilot Studio agents and Claude Code (30 July 2026) · 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 | Prompt Security |
| Public proof | 10% | 8 / 10 Part of the CrowdStrike Falcon platform with a documentation site and earlier releases as Falcon AIDR; Falcon Guardian is not priced on CrowdStrike's pricing page. Source: CrowdStrike: Falcon Guardian (formerly AIDR) product page · 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 | Tie |
Which verdicts does each document?
| Verdict type | CrowdStrike Falcon Guardian | Prompt Security (SentinelOne) |
|---|---|---|
| Block or deny | Documented | Documented |
| Ask a person | Not described | Not described |
| Alert or warn | Not described | Not described |
| Mask or modify | Not described | Documented |
| Simulate first | Not described | Not described |
| Remove or scale back | Not described | Not described |
- CrowdStrike Falcon Guardian: "Checks and blocks prompts and tool activity as they happen; automatic containment by blocking malicious agent behaviors."
Source: CrowdStrike blog: Falcon AIDR protects Copilot Studio agents and Claude Code (30 July 2026) · Read 13 Oct 2026
Source: CrowdStrike blog: Falcon Guardian (1 September 2026) · 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?
CrowdStrike Falcon Guardian
Through the Falcon sensor; Claude Code coverage is a settings-file entry with no additional agent to install.
Source: CrowdStrike blog: Falcon AIDR protects Copilot Studio agents and Claude Code (30 July 2026) · 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 | CrowdStrike Falcon Guardian | Prompt Security (SentinelOne) |
|---|---|---|
| Claude Code | Named | Named |
| Cursor | Not named | Named |
| GitHub Copilot | Not named | Named |
| OpenAI Codex | Not named | Not named |
| Windsurf | Not named | Not named |
| Claude Desktop | Not named | Not named |
| Named | 1 of 6 | 3 of 6 |
Which should you choose?
Choose CrowdStrike Falcon Guardian if you need stop before it runs and actor trail. CrowdStrike Falcon Guardian is best for: AI agent controls inside the Falcon platform.
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, CrowdStrike Falcon Guardian or Prompt Security (SentinelOne)?
On our published weights CrowdStrike Falcon Guardian scores higher overall, 6.25 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, CrowdStrike Falcon Guardian or Prompt Security (SentinelOne)?
CrowdStrike Falcon Guardian scores higher on stopping an action before it runs (8 to 6). CrowdStrike Falcon Guardian: Connects to Claude Code's hook events to check and block prompts and tool activity as they happen, and returns allow or block before a Copilot Studio agent runs a tool; CrowdStrike cites 100 ms or less detection latency from internal benchmark testing. Prompt Security (SentinelOne): Governs what agents and MCP servers can do; per-tool-call enforcement is not detailed.
Do CrowdStrike Falcon Guardian and Prompt Security (SentinelOne) publish prices?
CrowdStrike Falcon Guardian: not published. Falcon Guardian is not listed on CrowdStrike's pricing page, which shows Falcon Go, Pro and Enterprise bundles without it. Prompt Security (SentinelOne): not published. SentinelOne publishes no pricing for Prompt Security.