Is Harmonic or Lasso better for AI endpoint control?

Neither is scored on this site. Harmonic describes 2 of four product control types and Lasso 3 on the pages we read, and they differ on 7 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?

Harmonic: Partly. Lasso: Matches. Warn or ask: Harmonic Matches, Lasso Partly.

Do Harmonic or Lasso publish prices?

Harmonic: Three named tiers (Explore, Guide, Command) with no prices; a full prompt audit log is an add-on on Guide and Command. Lasso: Marketplace list price: Lasso for Employees, annual commit for GenAI chatbots, $20,000 for 12 months on AWS Marketplace. Other products: not published.

HEAD-TO-HEAD · FACTS ONLY

Harmonic vs Lasso: AI endpoint control facts side by side

Short answer

Harmonic describes 2 of the four product control types on the pages we read and Lasso describes 3; they differ on network or SSE proxy. On decisions, Harmonic describes some control over tool calls and Lasso 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: Harmonic
Dashed teal ring: Lasso, 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?

Harmonic Security and Lasso Security, from each product's own pages. Differs is computed from recorded statuses, not wording.
Fact	Harmonic	Lasso
Owner	None	None
Positioning	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.	An AI security platform with discovery and an AI-BOM, posture management, automated red teaming and runtime enforcement at the proxy, API or AI gateway layer, plus usage control through a browser extension and an open-source MCP gateway.
How it reaches devices	Rolls out through Intune, JAMF, Kandji or Group Policy. Source: Harmonic Security homepage · Read 27 Sep 2026	Several components: a browser extension and proxy integrations for usage control, an open-source MCP gateway, and Claude Code lifecycle hooks set through the enterprise management platform. Source: Lasso Security: AI usage control · Read 27 Sep 2026
On-device control	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	Partly describedConnects directly to Claude Code's lifecycle hooks via the enterprise management platform and inspects every tool call before it runs; a resident device agent is not described. Source: Lasso Security: AI coding assistants · Read 27 Sep 2026
Browser extension	DescribedBrowser extensions are a listed surface, with block, warn or log actions. Source: Harmonic Security homepage · Read 27 Sep 2026	DescribedAI usage control through a browser extension. Source: Lasso Security: AI usage control · Read 27 Sep 2026
Network or SSE proxyDiffers	Not in our sourcesNot described on the pages we read.	DescribedProxy integrations for AI usage control; the page says it works with Palo Alto Networks or CrowdStrike. Source: Lasso Security: AI usage control · Read 27 Sep 2026
AI or MCP gateway	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	DescribedAn open-source MCP gateway that discovers MCP servers across Claude, Cursor and Windsurf and can block, alert or sanitize. Source: Lasso Security: MCP security · Read 27 Sep 2026
Names the coding agents it covers	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	MatchesClaude Code lifecycle hooks, and MCP discovery across Claude, Cursor and Windsurf. Source: Lasso Security: AI coding assistants · Read 27 Sep 2026
Decides on a tool call before it runsDiffers	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	MatchesInspects every Claude Code tool call before it is executed. Source: Lasso Security: AI coding assistants · Read 27 Sep 2026
Controls what goes into browser AI	MatchesBlock, warn or log on AI use in the browser. Source: Harmonic Security homepage · Read 27 Sep 2026	MatchesUsage control through a browser extension. Source: Lasso Security: AI usage control · Read 27 Sep 2026
Rolls out through EDR or device management you runDiffers	MatchesRolls out through Intune, JAMF, Kandji or Group Policy. Source: Harmonic Security homepage · Read 27 Sep 2026	PartlyClaude Code hooks are set through the enterprise management platform; the other components are a browser extension, a proxy and a gateway. Source: Lasso Security: AI coding assistants · Read 27 Sep 2026
Can warn or ask instead of only blockingDiffers	MatchesWarn is one of three actions, with block and log. Source: Harmonic Security homepage · Read 27 Sep 2026	PartlyAlert is an action; asking the user is not described. Source: Lasso Security: MCP security · Read 27 Sep 2026
Can block an agent, tool or action	MatchesBlock is one of three actions. Source: Harmonic Security homepage · Read 27 Sep 2026	MatchesBlock, alert or sanitize on MCP traffic. Source: Lasso Security: MCP security · Read 27 Sep 2026
Has a watch-only or simulation modeDiffers	MatchesLog is one of three actions, for watching before enforcing. Source: Harmonic Security homepage · Read 27 Sep 2026	PartlyAlert without blocking. Source: Lasso Security: MCP security · Read 27 Sep 2026
Records who or what took each actionDiffers	Not in our sources	PartlyAudit-ready reports. Source: Lasso Security: AI usage control · Read 27 Sep 2026
Also covers SaaS, cloud or homegrown AIDiffers	PartlyAn API is listed alongside device surfaces; SaaS or cloud agents are not described. Source: Harmonic Security homepage · Read 27 Sep 2026	MatchesDiscovery and AI-BOM, posture management, red teaming and runtime enforcement for AI apps. Source: Lasso Security homepage · Read 27 Sep 2026
Has a public price or tiers (vendor site or marketplace)	PartlyNames three tiers (Explore, Guide, Command) on its pricing page, without prices. Source: Harmonic Security: pricing · Read 27 Sep 2026	PartlyAWS Marketplace lists Lasso for Employees with an annual commit for GenAI chatbots at $20,000 for 12 months (marketplace list price); prices for its other products are not listed there. Source: AWS Marketplace: Lasso for Employees · Read 11 Oct 2026
Built into	None	None
Works with	None in our sources	The usage control page says it works with Palo Alto Networks. The usage control page says it works with CrowdStrike. Offers proxy integrations for AI usage control. Source: Lasso Security: AI usage control · Read 27 Sep 2026
Price	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	Marketplace list price: Lasso for Employees, annual commit for GenAI chatbots, $20,000 for 12 months on AWS Marketplace. Other products: not published. Source: AWS Marketplace: Lasso for Employees · Read 11 Oct 2026

Where do they differ?

Network or SSE proxy: Harmonic is not in our sources; Lasso describes it.
Decides on a tool call before it runs: Harmonic partly matches; Lasso matches.
Rolls out through EDR or device management you run: Harmonic matches; Lasso partly matches.
Can warn or ask instead of only blocking: Harmonic matches; Lasso partly matches.
Has a watch-only or simulation mode: Harmonic matches; Lasso partly matches.
Records who or what took each action: Harmonic is not in our sources; Lasso partly matches.
Also covers SaaS, cloud or homegrown AI: Harmonic partly matches; Lasso matches.

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

Choose Lasso if

You want controls in several places at once: browser, proxy, MCP gateway and coding agent hooks
You prefer an open-source MCP gateway you can inspect

Which limits should you check?

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.

Lasso

Several components to deploy and run.
Asking the user before an action is not described, and the only public price covers its chatbot product on AWS Marketplace.

Line up Harmonic and Lasso with others Run the finder