HEAD-TO-HEAD · FACTS ONLY
Cloudflare AI Gateway vs Prompt Security: AI endpoint control facts side by side
Short answer
Cloudflare AI Gateway describes 1 of the four product control types on the pages we read and Prompt Security describes 2; they differ on on-device control, browser extension and AI or MCP gateway. On decisions, Cloudflare AI Gateway does not describe tool-call decisions on the pages we read and Prompt Security does not describe tool-call decisions on the pages we read. We do not score either; the right choice depends on the AI tools people use, your devices, your current stack and whether you block or guide.
By The Device Desk · Endpoint AI Finder · Published 2026-10-11
Desk research from public vendor pages read on 27 September and 11 October 2026. Profiles follow our published method; we did not run the products.
Vendor pages read September and October 2026 · updated 2026-10-13
Where do their controls sit?
- Filled or hatched marker: Cloudflare AI Gateway
- Dashed teal ring: Prompt Security, described
- DEV Filled marker: described on the product pages we read
- DEV Hatched marker: partly described (another component, a narrower scope, or method not detailed)
- DEV Dashed marker: not in our sources (it may exist; we did not find it)
What are the facts, side by side?
| Fact | Cloudflare AI Gateway | Prompt Security |
|---|---|---|
| Owner | None | SentinelOne (acquisition announced 5 August 2025; SentinelOne's blog of 3 September 2025 is titled SentinelOne Acquires Prompt Security) |
| Positioning | A gateway for AI applications: Cloudflare's documentation describes it as a way to observe and control AI apps, with analytics on requests, tokens and cost, logging, caching, rate limiting, request retry and model fallback across providers including Workers AI, Anthropic, Google Gemini, OpenAI and Replicate. It governs apps you build, not employees' devices. | Prompt Security, now part of SentinelOne, inventories AI tools and code assistants, including unsanctioned shadow AI, through two local sensors, a browser extension and a dedicated AI endpoint agent, and is built into the SentinelOne Singularity Platform. |
| How it reaches devices | Routed in front of model providers from your own applications; Cloudflare says it takes one line of code to start. Source: Cloudflare AI Gateway documentation · Read 11 Oct 2026 | Two local sensors: a browser extension and a dedicated AI endpoint agent, managed from the SentinelOne Singularity Platform. Prompt Security argues that MDM or EDR integrations, which mostly run scripts periodically, are not enough. Source: Prompt Security blog: browser and endpoint sensors · Read 11 Oct 2026 |
| On-device controlDiffers | Not in our sourcesNot described on the pages we read. | DescribedA dedicated AI endpoint agent detects new AI agents, skills and connectors and applies runtime policies; it names GitHub Copilot, Cursor and Claude Code among the code assistants it inventories. Source: Prompt Security blog: browser and endpoint sensors · Read 11 Oct 2026 |
| Browser extensionDiffers | Not in our sourcesNot described on the pages we read. | DescribedA browser extension inspects prompts, redacts sensitive data and discovers shadow AI. Source: Prompt Security blog: browser and endpoint sensors · Read 11 Oct 2026 |
| Network or SSE proxy | Not in our sourcesNot described on the pages we read. | Not in our sourcesNot described on the pages we read. |
| AI or MCP gatewayDiffers | DescribedAn AI gateway with analytics, logging, caching, rate limiting, retry and model fallback for AI applications. Source: Cloudflare AI Gateway documentation · Read 11 Oct 2026 | Not in our sourcesNot described on the pages we read. |
| Names the coding agents it coversDiffers | Not in our sources | MatchesNames GitHub Copilot, Cursor and Claude Code. Source: SentinelOne: Prompt Security · Read 27 Sep 2026 |
| Decides on a tool call before it runs | Not in our sources | Not in our sources |
| Controls what goes into browser AIDiffers | Not in our sources | MatchesThe browser extension inspects prompts and redacts sensitive data. Source: Prompt Security blog: browser and endpoint sensors · Read 11 Oct 2026 |
| Rolls out through EDR or device management you runDiffers | Not in our sources | PartlyIts own agent and extension, managed in the SentinelOne console; it does not ride on other EDR or MDM tools. Source: Prompt Security blog: browser and endpoint sensors · Read 11 Oct 2026 |
| Can warn or ask instead of only blocking | Not in our sources | Not in our sources |
| Can block an agent, tool or action | Not in our sources | Not in our sources |
| Has a watch-only or simulation modeDiffers | PartlyAnalytics and logs on requests, tokens and cost without changing the traffic. Source: Cloudflare AI Gateway documentation · Read 11 Oct 2026 | Not in our sources |
| Records who or what took each actionDiffers | PartlyLogs requests; tying a call to a person or an agent is not described. Source: Cloudflare AI Gateway documentation · Read 11 Oct 2026 | Not in our sources |
| Also covers SaaS, cloud or homegrown AI | MatchesBuilt for AI applications you build and run. Source: Cloudflare AI Gateway documentation · Read 11 Oct 2026 | MatchesCovers homegrown AI apps from testing to runtime. Source: SentinelOne: Prompt Security · Read 27 Sep 2026 |
| Has a public price or tiers (vendor site or marketplace) | Not in our sources | Not in our sources |
| Built into | None | Built into the SentinelOne Singularity Platform. Source: SentinelOne: Prompt Security · Read 27 Sep 2026 |
| Works with | None in our sources | None in our sources |
| Price | Available on all Cloudflare plans, per the documentation; plan prices are not on the page we read. Source: Cloudflare AI Gateway documentation · Read 11 Oct 2026 | Not published. Source: SentinelOne: Prompt Security · Read 27 Sep 2026 |
Where do they differ?
- On-device control: Cloudflare AI Gateway is not in our sources; Prompt Security describes it.
- Browser extension: Cloudflare AI Gateway is not in our sources; Prompt Security describes it.
- AI or MCP gateway: Cloudflare AI Gateway describes it; Prompt Security is not in our sources.
- Names the coding agents it covers: Cloudflare AI Gateway is not in our sources; Prompt Security matches.
- Controls what goes into browser AI: Cloudflare AI Gateway is not in our sources; Prompt Security matches.
- Rolls out through EDR or device management you run: Cloudflare AI Gateway is not in our sources; Prompt Security partly matches.
- Has a watch-only or simulation mode: Cloudflare AI Gateway partly matches; Prompt Security is not in our sources.
- Records who or what took each action: Cloudflare AI Gateway partly matches; Prompt Security is not in our sources.
Choose Cloudflare AI Gateway if
- You build your own AI apps and want one place to log and control their model calls
- You already use Cloudflare and want AI traffic to pass through it
Choose Prompt Security if
- You already run SentinelOne Singularity
- You need an inventory of AI tools and coding assistants first
Which limits should you check?
Cloudflare AI Gateway
- It is an application gateway: it does not see employees' AI tools, coding agents or devices.
- Content controls such as blocking prompts are not described on the page we read, and plan prices are not on it.
Prompt Security
- Two new local sensors to roll out, a browser extension and an endpoint agent, unless you already run SentinelOne.
- Tool-call decisions, blocking, warning and activity records for agent actions are not described on the pages we read, and no pricing is published.