Is Glow or Onyx better for AI endpoint control?

Neither is scored on this site. Glow describes 0 of four product control types and Onyx 3 on the pages we read, and they differ on 8 recorded facts. Which fits depends on the AI tools people use, your devices, where the work happens and whether you block or guide; the finder checks those.

Which of the two decides on a tool call before it runs?

Glow: Partly. Onyx: Matches. Warn or ask: Glow Partly, Onyx Matches.

Do Glow or Onyx publish prices?

Glow: Not published (demo request). Onyx: Not published.

HEAD-TO-HEAD · FACTS ONLY

Glow vs Onyx: AI endpoint control facts side by side

Short answer

Glow describes 0 of the four product control types on the pages we read and Onyx describes 3; they differ on on-device control, browser extension and AI or MCP gateway. On decisions, Glow describes some control over tool calls and Onyx decides on a tool call before it runs. 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: Glow
Dashed teal ring: Onyx, 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)

The map shows where each product's own pages describe a control, or where your answers point. It is not a measure of how well a product works.

What are the facts, side by side?

Glow Security and Onyx Security, from each product's own pages. Differs is computed from recorded statuses, not wording.
Fact	Glow	Onyx
Owner	None	None
Positioning	"The Endpoint AI Company": control over everything that runs on the endpoint, in three areas (Asset Intelligence, Software Control, Safe AI Adoption), plus an Anthropic integration that collects per-user Claude usage, skills, connectors and a compliance audit trail. Came out of stealth on 22 July 2026 with $180M; Tel Aviv and Palo Alto.	"The Secure AI Control Plane for the Agentic Era": inline inspection of prompts, tool calls and model responses across browser AI, coding assistants, desktop AI agents, cloud workloads and MCP servers. Based in Tel Aviv and New York.
How it reaches devices	How Glow reaches devices is not stated on its homepage; its documentation site could not be read. The Anthropic integration uses one API key and needs Claude Enterprise and the Compliance API. Source: Glow Security: Anthropic integration · Read 13 Oct 2026	Endpoint agents, browser extensions, APIs and gateways. Source: Onyx Security: AI security platform · Read 27 Sep 2026
On-device controlDiffers	Partly describedSoftware control and runtime prevention policies; a pre-execution hook can block an action or hold it for approval. Source: Glow Security blog: AI agents exposed developer screenshots, 29 September 2026 · Read 13 Oct 2026	DescribedEndpoint agents cover coding assistants and desktop AI agents. Source: Onyx Security: AI security platform · Read 27 Sep 2026
Browser extensionDiffers	Not in our sourcesNot described on the pages we read.	DescribedBrowser extensions cover browser AI. Source: Onyx Security: AI security platform · 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 gatewayDiffers	Not in our sourcesNot described on the pages we read.	DescribedGateways and APIs inspect traffic inline. Source: Onyx Security: AI security platform · Read 27 Sep 2026
Names the coding agents it covers	PartlyNames Claude Code through a managed-settings bundle in its Anthropic integration. Source: Glow Security: Anthropic integration · Read 13 Oct 2026	PartlyCovers coding assistants; specific tools are not named on the pages we read. Source: Onyx Security: AI security platform · Read 27 Sep 2026
Decides on a tool call before it runsDiffers	PartlyDescribes a pre-execution hook that can block or hold an action. Source: Glow Security blog: AI agents exposed developer screenshots, 29 September 2026 · Read 13 Oct 2026	MatchesInspects every prompt, tool call and model response inline. Source: Onyx Security: AI security platform · Read 27 Sep 2026
Controls what goes into browser AIDiffers	Not in our sources	MatchesCan mask data in browser AI as well as block it. Source: Onyx Security: AI security platform · Read 27 Sep 2026
Rolls out through EDR or device management you run	Not in our sources	Not in our sources
Can warn or ask instead of only blockingDiffers	PartlyCan hold an action for approval. Source: Glow Security blog: AI agents exposed developer screenshots, 29 September 2026 · Read 13 Oct 2026	MatchesFive actions: alert, block, mask, steer or ask. Source: Onyx Security: AI security platform · Read 27 Sep 2026
Can block an agent, tool or action	MatchesA pre-execution hook can block an action. Source: Glow Security blog: AI agents exposed developer screenshots, 29 September 2026 · Read 13 Oct 2026	MatchesBlock is one of five actions. Source: Onyx Security: AI security platform · Read 27 Sep 2026
Has a watch-only or simulation modeDiffers	Not in our sources	PartlyAlert is one of five actions; a simulation mode is not described. Source: Onyx Security: AI security platform · Read 27 Sep 2026
Records who or what took each action	PartlyCompliance audit trail for Claude through the Anthropic integration. Source: Glow Security: Anthropic integration · Read 13 Oct 2026	PartlyIntegrates with Okta, Entra and Splunk; separating a person from an agent is not described. Source: Onyx Security: AI security platform · Read 27 Sep 2026
Also covers SaaS, cloud or homegrown AIDiffers	PartlyCovers Claude Enterprise accounts, skills and connectors through the Anthropic integration. Source: Glow Security: Anthropic integration · Read 13 Oct 2026	MatchesCloud workloads and MCP servers as well as devices. Source: Onyx Security: AI security platform · 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	None
Works with	None in our sources	Lists CrowdStrike among its integrations. Source: Onyx Security: AI security platform · Read 27 Sep 2026
Price	Not published (demo request). Source: Glow Security homepage · Read 13 Oct 2026	Not published. Source: Onyx Security homepage · Read 27 Sep 2026

Where do they differ?

On-device control: Glow partly describes it; Onyx describes it.
Browser extension: Glow is not in our sources; Onyx describes it.
AI or MCP gateway: Glow is not in our sources; Onyx describes it.
Decides on a tool call before it runs: Glow partly matches; Onyx matches.
Controls what goes into browser AI: Glow is not in our sources; Onyx matches.
Can warn or ask instead of only blocking: Glow partly matches; Onyx matches.
Has a watch-only or simulation mode: Glow is not in our sources; Onyx partly matches.
Also covers SaaS, cloud or homegrown AI: Glow partly matches; Onyx matches.

Choose Glow if

Your company runs Claude Enterprise and wants per-user usage and an audit trail
You want software control on the endpoint alongside AI controls

Choose Onyx if

You want masking or steering rather than only allow or block
AI use spans the browser, desktop apps, coding tools and cloud workloads

Which limits should you check?

Glow

How it reaches devices is not stated on the pages we could read.
No price is published, and the homepage figures are Glow's own statements.

Onyx

Uses its own endpoint agents and browser extensions, so there is something new to roll out to devices.
No pricing published, and specific coding agents are not named on the pages we read.

Line up Glow and Onyx with others Run the finder