HEAD-TO-HEAD · FACTS ONLY
Cloudflare AI Gateway vs Harmonic: 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 Harmonic describes 2; they differ on on-device control and browser extension. On decisions, Cloudflare AI Gateway does not describe tool-call decisions on the pages we read and Harmonic describes some control over tool calls. 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: Harmonic, 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 | Harmonic |
|---|---|---|
| Owner | None | None |
| 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. | A data protection product for everyday AI use, sold as Explore, Guide and Command, covering browser extensions, desktop apps and CLI tools, MCP gateways and an API. |
| 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 | Rolls out through Intune, JAMF, Kandji or Group Policy. Source: Harmonic Security homepage · Read 27 Sep 2026 |
| On-device controlDiffers | Not in our sourcesNot described on the pages we read. | Partly describedDeployment options include desktop apps and AI agents, rolled out through device management; the on-device component is not described in detail. Source: Harmonic Security pricing (re-read) · Read 11 Oct 2026 |
| Browser extensionDiffers | Not in our sourcesNot described on the pages we read. | DescribedBrowser extensions are a listed surface, with block, warn or log actions. Source: Harmonic Security homepage · Read 27 Sep 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 gateway | 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 | DescribedMCP gateways are a listed surface, and Harmonic Command governs at the MCP layer and at the tool surface. Source: Harmonic Security: Command · Read 27 Sep 2026 |
| Names the coding agents it coversDiffers | Not in our sources | MatchesThe Guide tier adds desktop AI apps and developer tools, naming Claude Code, GitHub Copilot, ChatGPT Desktop and Microsoft 365 Copilot. Source: Harmonic Security pricing (re-read) · Read 11 Oct 2026 |
| Decides on a tool call before it runsDiffers | Not in our sources | PartlyThe Command tier adds MCP client and server discovery, agent permissions for read, write and execute, and MCP server tool controls. Source: Harmonic Security pricing (re-read) · Read 11 Oct 2026 |
| Controls what goes into browser AIDiffers | Not in our sources | MatchesBlock, warn or log on AI use in the browser. Source: Harmonic Security homepage · Read 27 Sep 2026 |
| Rolls out through EDR or device management you runDiffers | Not in our sources | MatchesRolls out through Intune, JAMF, Kandji or Group Policy. Source: Harmonic Security homepage · Read 27 Sep 2026 |
| Can warn or ask instead of only blockingDiffers | Not in our sources | MatchesWarn is one of three actions, with block and log. Source: Harmonic Security homepage · Read 27 Sep 2026 |
| Can block an agent, tool or actionDiffers | Not in our sources | MatchesBlock is one of three actions. Source: Harmonic Security homepage · Read 27 Sep 2026 |
| 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 | MatchesLog is one of three actions, for watching before enforcing. Source: Harmonic Security homepage · Read 27 Sep 2026 |
| 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 AIDiffers | MatchesBuilt for AI applications you build and run. Source: Cloudflare AI Gateway documentation · Read 11 Oct 2026 | PartlyAn API is listed alongside device surfaces; SaaS or cloud agents are not described. Source: Harmonic Security homepage · Read 27 Sep 2026 |
| Has a public price or tiers (vendor site or marketplace)Differs | Not in our sources | PartlyNames three tiers (Explore, Guide, Command) on its pricing page, without prices. Source: Harmonic Security: pricing · Read 27 Sep 2026 |
| Built into | None | None |
| 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 | Three named tiers (Explore, Guide, Command) with no prices; a full prompt audit log is an add-on on Guide and Command. Source: Harmonic Security pricing (re-read) · Read 11 Oct 2026 |
Where do they differ?
- On-device control: Cloudflare AI Gateway is not in our sources; Harmonic partly describes it.
- Browser extension: Cloudflare AI Gateway is not in our sources; Harmonic describes it.
- Names the coding agents it covers: Cloudflare AI Gateway is not in our sources; Harmonic matches.
- Decides on a tool call before it runs: Cloudflare AI Gateway is not in our sources; Harmonic partly matches.
- Controls what goes into browser AI: Cloudflare AI Gateway is not in our sources; Harmonic matches.
- Rolls out through EDR or device management you run: Cloudflare AI Gateway is not in our sources; Harmonic matches.
- Can warn or ask instead of only blocking: Cloudflare AI Gateway is not in our sources; Harmonic matches.
- Can block an agent, tool or action: Cloudflare AI Gateway is not in our sources; Harmonic matches.
- Has a watch-only or simulation mode: Cloudflare AI Gateway partly matches; Harmonic matches.
- Records who or what took each action: Cloudflare AI Gateway partly matches; Harmonic is not in our sources.
- Also covers SaaS, cloud or homegrown AI: Cloudflare AI Gateway matches; Harmonic partly matches.
- Has a public price or tiers (vendor site or marketplace): Cloudflare AI Gateway is not in our sources; Harmonic partly matches.
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 Harmonic if
- Your main risk is employees pasting sensitive data into AI tools and you would rather coach than block
- You manage devices with Intune, JAMF, Kandji or Group Policy
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.
Harmonic
- Tier names only, no prices, and the full prompt audit log is an add-on.
- An activity record that separates a person from an agent is not described, and prompt injection protection is listed as coming soon.