Head to head · Checked against vendor sites, September 2026
CrowdStrike Falcon Guardian vs Prompt Security (SentinelOne): AI agent security compared
The verdict
CrowdStrike Falcon Guardian scores higher overall on our weights (7.7 vs 6.6 out of 10). CrowdStrike Falcon Guardian scores higher on visibility, tool-call control, footprint, identity and audit and breadth; Prompt Security scores higher on policy. They tie on maturity. Neither publishes list prices.
CrowdStrike Falcon Guardian
Owner: CrowdStrike
Best for CrowdStrike Falcon customers
Prompt Security (SentinelOne)
Owner: SentinelOne (acquisition announced 5 August 2025)
Best for SentinelOne customers
How do CrowdStrike Falcon Guardian and Prompt Security compare on each criterion?
| Criterion | Weight | CrowdStrike Falcon Guardian | Prompt Security | Edge |
|---|---|---|---|---|
| Visibility | 22% | 8 | 7 | CrowdStrike Falcon Guardian |
Why these scoresCrowdStrike Falcon Guardian: Discovers shadow AI agents, including token consumption, on supported Windows, macOS and Linux endpoints, and ties prompts, skill use, tool calls and MCP servers to what runs next. Prompt Security: Inventories AI tools and code assistants, including shadow AI, and maps agents and MCP servers. | ||||
| Tool-call control | 20% | 8 | 6 | CrowdStrike Falcon Guardian |
Why these scoresCrowdStrike 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. Prompt Security: Governs what agents and MCP servers can do; per-tool-call enforcement is not detailed. | ||||
| Policy | 15% | 6 | 7 | Prompt Security |
Why these scoresCrowdStrike Falcon Guardian: Sets which supported AI agent types may run on managed endpoints, with policy assigned through Falcon host groups; ask, warn or simulate actions are not described on the pages we read. Prompt Security: Prevents prompt injection and data leakage for tools such as GitHub Copilot, Cursor and Claude Code. | ||||
| Identity and audit | 12% | 8 | 5 | CrowdStrike Falcon Guardian |
Why these scoresCrowdStrike Falcon Guardian: Ties Claude Code events to a specific session and user in Falcon Next-Gen SIEM, and links prompts and tool calls to identity and downstream execution for supported agents. Prompt Security: Agent vs human attribution not described on the pages we reviewed. | ||||
| Footprint | 13% | 7 | 6 | CrowdStrike Falcon Guardian |
Why these scoresCrowdStrike Falcon Guardian: Delivered through the Falcon sensor; Claude Code coverage is a settings-file entry with no extra agent to install. A third-party report (SACR) adds browser extensions, gateway integrations, an SDK and an MCP proxy, and says prompt-layer telemetry needs network connectivity. Prompt Security: Built into the SentinelOne Singularity Platform; the deployment method is not detailed. | ||||
| Breadth | 8% | 9 | 8 | CrowdStrike Falcon Guardian |
Why these scoresCrowdStrike Falcon Guardian: Covers AI agents from endpoint to cloud and SaaS, including Copilot Studio agents, with Falcon Adversary OverWatch threat hunting extended to AI agents; the AI gateway is listed as coming soon. Prompt Security: Employees, developers and homegrown AI apps from testing to runtime. | ||||
| Maturity | 10% | 8 | 8 | Tie |
Why these scoresCrowdStrike Falcon Guardian: Part of the CrowdStrike Falcon platform, with a documentation site and earlier releases as Falcon AIDR; Falcon Guardian pricing is not on CrowdStrike's pricing page, and the 99% efficacy and 100 ms figures come from CrowdStrike's internal benchmark testing. Prompt Security: Backed by SentinelOne, which announced the acquisition on 5 August 2025; pricing not published. | ||||
| Total | 100% | 7.7 | 6.6 | CrowdStrike Falcon Guardian |
How do they deploy, and what do they cost?
| Attribute | CrowdStrike Falcon Guardian | Prompt Security |
|---|---|---|
| Owner | CrowdStrike | SentinelOne (acquisition announced 5 August 2025) |
| How it reaches devices | Falcon sensor; Claude Code via hooks | Part of Singularity Platform; method not published |
| Deployment detail | Delivered through the Falcon sensor. Claude Code coverage is a settings-file entry with no extra agent to install. A third-party report (SACR) adds browser extensions, gateway integrations, an SDK and an MCP proxy, and says prompt-layer telemetry needs network connectivity. For Falcon customers it adds AI agent controls inside the EDR they already run. | SentinelOne says Prompt Security deploys in minutes and is part of the Singularity Platform that protects endpoints, cloud, identity and data. The specific deployment method (browser extension, endpoint agent, IDE extension or proxy) is not detailed on the page we reviewed. |
| Pricing | Contact sales. Falcon Guardian pricing is not on CrowdStrike's pricing page. | Contact sales. Pricing is not published. |
Source: CrowdStrike Falcon Guardian (AIDR) product page · CrowdStrike blog: Falcon Guardian (1 Sep 2026) · CrowdStrike blog: Falcon AIDR for Copilot Studio and Claude Code (30 Jul 2026) · CrowdStrike pricing · SentinelOne Prompt Security page · SentinelOne press release, 5 August 2025 · prompt.security · Reviewed Sep 2026
Which should you choose?
Choose CrowdStrike Falcon Guardian if
- Your priority matches our designation for CrowdStrike Falcon Guardian: best for CrowdStrike Falcon customers.
- You need an audit record that separates agent actions from human actions: CrowdStrike Falcon Guardian scores 8 to 5.
- You need to evaluate or stop individual tool calls before they run: CrowdStrike Falcon Guardian scores 8 to 6.
Choose Prompt Security if
- Your priority matches our designation for Prompt Security: best for SentinelOne customers.
- You want context-aware rules and answers beyond allow and block: Prompt Security scores 7 to 6.
Frequently asked questions
Which is better, CrowdStrike Falcon Guardian or Prompt Security (SentinelOne)?
CrowdStrike Falcon Guardian scores higher overall on our weights (7.7 vs 6.6 out of 10). CrowdStrike Falcon Guardian scores higher on visibility, tool-call control, footprint, identity and audit and breadth; Prompt Security scores higher on policy. They tie on maturity. Scores are editorial assessments from public vendor material, reviewed September 2026.
Do CrowdStrike Falcon Guardian and Prompt Security (SentinelOne) publish prices?
No. Neither publishes list prices, so ask both for a quote.
Do CrowdStrike Falcon Guardian or Prompt Security (SentinelOne) replace EDR?
No. The tools in this guide add control over AI agent actions and work alongside EDR. CrowdStrike Falcon Guardian: Falcon sensor; Claude Code via hooks. Prompt Security: Part of Singularity Platform; method not published.
Related
Sources
- CrowdStrike Falcon Guardian (AIDR) product page · Reviewed Sep 2026
- CrowdStrike blog: Falcon Guardian (1 Sep 2026) · Reviewed Sep 2026
- CrowdStrike blog: Falcon AIDR for Copilot Studio and Claude Code (30 Jul 2026) · Reviewed Sep 2026
- CrowdStrike pricing · Reviewed Sep 2026
- SentinelOne Prompt Security page · Reviewed Sep 2026
- SentinelOne press release, 5 August 2025 · Reviewed Sep 2026
- prompt.security · Reviewed Sep 2026