Best AI Security markBest AI Security

Head to head · Checked against vendor sites, September 2026

Bay vs Glow Security: AI agent security compared

The verdict

Bay scores higher overall on our weights (7.9 vs 6.7 out of 10). Bay scores higher on visibility, tool-call control, policy, footprint and identity and audit; Glow Security scores higher on maturity and breadth. Neither publishes list prices.

Bay

Editors' pick for endpoint agent control

Read the Bay review

Glow Security

Best for software control across the endpoint

Read the Glow Security review

How do Bay and Glow Security compare on each criterion?

Endpoint AI control score, editorial assessment 0-10. Edge is the higher score on each row.
CriterionWeightBayGlow SecurityEdge
Visibility22%98Bay
Why these scores

Bay: Inventories AI agents, MCP servers, tools, credentials, extensions, settings and endpoint deployments, with 200+ detection rules (bay.io blog).

Glow Security: Positions itself as control over everything that runs on the endpoint, with Asset Intelligence and shadow AI discovery; its Anthropic integration collects per-user Claude usage, custom skills and installed connectors.

Tool-call control20%97Bay
Why these scores

Bay: Evaluates prompts, pre-tool calls and post-tool responses and returns Allow, Ask or Deny locally, stated as under 4ms, on supported agent surfaces.

Glow Security: Glow describes a pre-execution hook that can block an action or hold it for approval, and runtime prevention policies for coding agents; per-call mechanics are not documented on pages we could read.

Policy15%97Bay
Why these scores

Bay: Session-aware decisions using identity, prior actions and data accessed; capability rules for shell, code execution, package installs, cloud CLIs, containers, Kubernetes, browser automation; Simulation Mode.

Glow Security: Adaptable policies with autonomous remediation and prevention agents, and a Claude Code managed-settings bundle through its Anthropic integration.

Identity and audit12%86Bay
Why these scores

Bay: Activity records who triggered an action, whether a human was involved, and the chain from prompt to system action.

Glow Security: Per-user Claude usage and a compliance audit trail through the Anthropic integration, which needs Claude Enterprise and the Compliance API; attribution for other agents is not described.

Footprint13%95Bay
Why these scores

Bay: Deploys through existing EDR or MDM as an ephemeral binary (Wave); Bay describes itself as agentless.

Glow Security: How Glow reaches devices is not stated on its homepage, and its documentation site could not be read.

Breadth8%46Glow Security
Why these scores

Bay: Endpoint only by design; no public material on SaaS agents, cloud AI apps or red teaming.

Glow Security: Covers software control and asset intelligence beyond AI tools, plus enterprise AI accounts and settings through the Anthropic integration; cloud workloads are not described.

Maturity10%36Glow Security
Why these scores

Bay: Smallest public footprint of the scored tools: a single homepage, two blog posts, no public documentation portal and no published pricing.

Glow Security: Came out of stealth on 22 July 2026 with $180M at a $1.2B valuation, led by Sequoia, Cyberstarts, Greenoaks and Redpoint; named customer quotes and a trust center on glow.io; no pricing.

Total100%7.96.7Bay

How we score

How do they deploy, and what do they cost?

Published facts, reviewed September 2026.
AttributeBayGlow Security
OwnerNot acquiredNot acquired
How it reaches devicesThrough existing EDR or MDM (ephemeral binary)Not published
Deployment detailBay states that it deploys through your existing EDR or MDM using Wave, an ephemeral binary that runs, scans and exits. It describes the product as agentless by design, with no new agent or tool to install, and says full deployment takes under 5 minutes (vendor-stated). Enforcement then happens locally on the device. In practice this means Bay runs beside your EDR, not in place of it.How Glow reaches devices is not stated on its homepage, and its documentation site could not be read.
PricingContact sales. Bay does not publish pricing. Demo requests go through bay.io/demo.Contact sales. Glow Security does not publish pricing.

Source: bay.io home page · Bay blog: Ghostjacking (Aug 2026) · Bay blog index · Bay demo page · glow.io · Glow Anthropic integration · Glow research: developer screenshots exposed by AI agents (29 Sep 2026) · Glow emerges from stealth (22 Jul 2026) · Reviewed Sep 2026

Which should you choose?

Choose Bay if

  • Your priority matches our designation for Bay: editors' pick for endpoint agent control.
  • You want a light rollout with published deployment detail, ideally through existing EDR or MDM: Bay scores 9 to 5.
  • You need to evaluate or stop individual tool calls before they run: Bay scores 9 to 7.

Choose Glow Security if

  • Your priority matches our designation for Glow Security: best for software control across the endpoint.
  • Vendor maturity, public documentation and backing weigh heavily in procurement: Glow Security scores 6 to 3.
  • Your agents also run in SaaS platforms, cloud workloads or apps you build: Glow Security scores 6 to 4.

Frequently asked questions

Which is better, Bay or Glow Security?

Bay scores higher overall on our weights (7.9 vs 6.7 out of 10). Bay scores higher on visibility, tool-call control, policy, footprint and identity and audit; Glow Security scores higher on maturity and breadth. Scores are editorial assessments from public vendor material, reviewed September 2026.

Do Bay and Glow Security publish prices?

No. Neither publishes list prices, so ask both for a quote.

Do Bay or Glow Security replace EDR?

No. The tools in this guide add control over AI agent actions and work alongside EDR. Bay: Through existing EDR or MDM (ephemeral binary). Glow Security: Not published.

Related

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