CISO Tribune

Vendor comparison · 2 companies

Holistic AI vs Pillar Security

Holistic AI sells an enterprise AI governance platform that lets customers discover every model, agent and application, assess AI risk and enforce policies. Pillar Security sells one platform to discover, test, secure and govern every AI agent across an organization. CISO Tribune files both under AI governance and AI model and agent security. This page sets the two records side by side: what each sells, where it is based, who owns and funds it, the customers it names and its recent news, each fact numbered to its source.

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  • Holistic AI
  • Pillar Security
Holistic AI vs Pillar Security: Products, Customers and Funding Compared
Holistic AIHolistic AI sells an enterprise AI governance platform that lets customers discover every model, agent and application, assess AI risk and enforce policies.holisticai.comPillar SecurityPillar Security sells one platform to discover, test, secure and govern every AI agent across an organization.pillar.security
What it sells
  • Sentinel Agents[4]Continuously monitor what a customer's AI says in production.
  • Operative Agents[4]Step in inline when risk crosses a defined threshold.
  • Agentic Endpoint[7][10]Protects the AI agents that run on employee machines.
Categories
Headquarters
San Francisco, United States[2]Not stated on its pages
Founded
2020[3]Not stated on its pages
Ownership and funding
Privately held[4]Owned by Vanta
Named customers
Not stated on its pagesNot stated on its pages
Recent news
Not stated on its pages
  • November 9, 2026Vanta signed a definitive agreement to acquire Pillar Security, an AI security platform that protects AI agents across their lifecycle.[11]
G2 and Gartner Peer Insights
  • G2: Not stated on its pages
  • Gartner Peer Insights: Not stated on its pages
  • G2: Not stated on its pages
  • Gartner Peer Insights: Not stated on its pages
Who it fits
From its own pages, Holistic AI sells mainly to enterprises that deploy AI at scale, including LLMs, generative AI and agents. Its pages address teams responsible for AI risk, with Security, Legal and Boards named as the audiences for compliance proof. The platform connects to cloud, code and SaaS environments through read-only integrations.Not written yet
Last verified
September 27, 2026November 10, 2026

Where they overlap

  • Holistic AI and Pillar Security are both filed under AI governance and AI model and agent security.

Where they differ, field by field

  • Holistic AI's primary category is AI governance; Pillar Security's is AI model and agent security.
  • Pillar Security is also filed under AI firewalls and guardrails and Workforce AI usage security.
  • Holistic AI lists Sentinel Agents and Operative Agents. Pillar Security lists Agentic Endpoint.
  • Holistic AI is headquartered in San Francisco, United States.
  • Holistic AI was founded in 2020.
  • Holistic AI is privately held. Pillar Security is owned by Vanta.

What it sells: Holistic AI

What Sentinel Agents does[4]
The platform page says Sentinel Agents continuously monitor what AI says in production. The risks named are prompt injection, jailbreaks, data leakage, hallucination and toxicity. The page says they work without interrupting workflows.
What Operative Agents does[4]
The platform page says that when risk crosses a defined threshold, Operative Agents step in inline. They govern which tools the AI calls, what it can access and how much it can spend, in real time.

What it sells: Pillar Security

What Agentic Endpoint does[7][10]
Pillar deploys through an MDM and inventories the AI coding agents across a fleet: which agents run where, their versions, sandbox state and risk. Runtime Guardian sits in the agent's own pre-tool hook for Claude Code, Codex CLI and Cursor, and decides on every action before it runs. Pillar inventories local and remote servers across a fleet and scores each against a catalog of 23,000+ pre-analyzed servers.

Questions about Holistic AI and Pillar Security

What do Holistic AI and Pillar Security sell?
Holistic AI sells Sentinel Agents and Operative Agents. Pillar Security sells Agentic Endpoint.
Are Holistic AI and Pillar Security in the same category?
They share AI governance and AI model and agent security. Holistic AI's primary category is AI governance and Pillar Security's is AI model and agent security.
Where are Holistic AI and Pillar Security headquartered?
Holistic AI is headquartered in San Francisco, United States.
When were Holistic AI and Pillar Security founded?
Holistic AI was founded in 2020.
Who owns Holistic AI and Pillar Security?
Holistic AI is privately held. Pillar Security is owned by Vanta.
Who are Holistic AI and Pillar Security sold to?
From its own pages, Holistic AI sells mainly to enterprises that deploy AI at scale, including LLMs, generative AI and agents.
What have Holistic AI and Pillar Security announced recently?
November 9, 2026: Vanta signed a definitive agreement to acquire Pillar Security, an AI security platform that protects AI agents across their lifecycle.

About Holistic AI

Holistic AI sells an enterprise AI governance platform that lets customers discover every model, agent and application, assess AI risk and enforce policies.[1]

Holistic AI describes the problem as AI shipping faster than it can be governed. Its home page says new AI agents, LLMs and vendor tools go live every week, while AI inventory, risk assessments and compliance evidence still live in spreadsheets. The page also says that without AI discovery, nobody holds a complete and current inventory of what is actually running.[1]

The platform is organised around three layers: Identify, Protect and Enforce. The platform page says Identify continuously discovers and inventories every model, agent, API and pipeline across cloud, code and vendors, including shadow AI. The same page says Protect assesses, tests and red teams every system, from static models to multi-agent workflows. Enforce turns governance policy into enforceable workflows, maps controls to regulations, and generates audit-ready evidence on demand.[1]

On the risk side, the home page says the platform runs red teaming for prompt injection and jailbreaks, and 40+ tests for bias, hallucination, privacy and robustness. Holistic AI also says it monitors drift and performance in production. For agentic systems, Agent Graph maps the relationships among agents, tools, tasks and data so organizations can assess the system as a whole.[1][7]

Sentinel Agents monitor what an AI says in production, and Operative Agents step in inline when risk crosses a defined threshold. The platform page says enforcement runs inline via the HAI Guardian SDK.

For deployment, Holistic AI says its integrations are read-only and need no agents to install.

Holistic AI also offers an independent audit under the Digital Services Act.[5]

Holistic AI began at University College London, where Dr Adriano Koshiyama and Dr Emre Kazim set out to solve the governance problem. Its stated mission is to empower enterprises to adopt and scale AI with confidence.[6]

The trust center also says Holistic AI does not use customer data to train models.[1][5][6][8][9]

Holistic AI on the record

Sources

Holistic AI full record

  1. [1]Holistic AI – The Leading AI Governance PlatformHolistic AI · undated page, accessed September 27, 2026 · Tier A
  2. [2]About Holistic AI- The Leading AI Governance PlatformHolistic AI · undated page, accessed September 27, 2026 · Tier A
  3. [3]Holistic AI Launches Open Source Library to Advance Responsible AIHolistic AI via Business Wire · businesswire.com · published October 22, 2024 · Tier A
  4. [4]An End to End AI Governance Platform - Holistic AIHolistic AI · undated page, accessed October 25, 2026 · Tier A
  5. [5]Digital Services Act ComplianceHolistic AI · undated page, accessed October 25, 2026 · Tier A
  6. [6]Seamless Integrations for Enterprise AI Governance - Holistic AIHolistic AI · undated page, accessed October 25, 2026 · Tier A
  7. [7]Holistic AI named a Challenger in the 2026 Gartner Magic Quadrant for AI Governance PlatformsHolistic AI · undated page, accessed November 5, 2026 · Tier A
  8. [8]Customer Success Stories | Holistic AIHolistic AI · undated page, accessed November 5, 2026 · Tier A
  9. [9]Trust Center - Holistic AIHolistic AI · undated page, accessed November 5, 2026 · Tier A

Pillar Security full record

  1. [1]pillar.securityPillar Security · pillar.security · undated page, accessed November 10, 2026 · Tier A
  2. [2]Pillar Security | Securing the Agentic WorkforcePillar Security · undated page, accessed November 11, 2026 · Tier A
  3. [3]Pillar Security Platform | Securing the Entire AI Software LifecyclePillar Security · undated page, accessed November 11, 2026 · Tier A
  4. [4]AI Discovery & Posture | Pillar SecurityPillar Security · undated page, accessed November 11, 2026 · Tier A
  5. [5]AI Red Teaming & Risk Detection | Pillar SecurityPillar Security · undated page, accessed November 11, 2026 · Tier A
  6. [6]AI Runtime Guardrails | Pillar SecurityPillar Security · undated page, accessed November 11, 2026 · Tier A
  7. [7]Agentic Endpoint: Secure AI Coding Agents | Pillar SecurityPillar Security · undated page, accessed November 11, 2026 · Tier A
  8. [8]AI Security Solutions | Pillar SecurityPillar Security · undated page, accessed November 11, 2026 · Tier A
  9. [9]AI Governance & Compliance | Pillar SecurityPillar Security · undated page, accessed November 11, 2026 · Tier A
  10. [10]Deployment Options: Cloud, Self-Hosted, Hybrid · PillarPillar Security · undated page, accessed November 11, 2026 · Tier A
  11. [11]Vanta to Acquire Pillar Security to Turn AI Policy Into PracticeBusiness Wire · published November 9, 2026 · Tier A

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