CISO Tribune

Vendor comparison · 2 companies

Prompt Security vs Singulr

Prompt Security offers protection for both employee use of AI tools and the apps an organization builds. Singulr is a closed-loop control system that governs AI across the enterprise, from policy definition through runtime enforcement to adversarial defense. CISO Tribune files both under Workforce AI usage security 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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  • Prompt Security
  • Singulr
Prompt Security vs Singulr: Products, Customers and Funding Compared
Prompt SecurityPrompt Security offers protection for both employee use of AI tools and the apps an organization builds.prompt.securitySingulrSingulr is a closed-loop control system that governs AI across the enterprise, from policy definition through runtime enforcement to adversarial defense.singulr.ai
What it sells
  • Prompt Fuzzer[4]An open source tool for AI vulnerability assessment.
  • Enterprise AI and Agentic Control Plane[5]A closed-loop control system that governs AI across the enterprise, from policy definition through runtime enforcement to adversarial defense.
  • Singulr Assurance™ LayerWraps the three runtime pillars, feeding context in and generating independent evidence out.
  • Singulr Pulse™Risk intelligence that scores discovered AI assets.
Categories
Headquarters
Not stated on its pagesPalo Alto, California, United States[3]
Founded
2023[1]Not stated on its pages
Ownership and funding
Owned by SentinelOne since 2025[3][7][8][10]Not stated on its pages
Named customers
Not stated on its pagesNot stated on its pages
Recent news
Not stated on its pages
  • March 9, 2026Singulr AI launched Agent Pulse, extending its Unified AI Control Plane to autonomous AI agents and MCP servers.[2]
G2 and Gartner Peer Insights
  • G2: listed, seen November 10, 2026[10]
  • 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
Not written yetSingulr addresses CISOs who need to protect against AI threats while enabling innovation. Singulr addresses CIOs who need to scale AI adoption while maintaining control. Singulr addresses privacy, risk, and compliance teams that enable rapid AI adoption with controls. Singulr aims to unite security, IT, privacy, compliance, and finance on one control system. Singulr states that Agent Pulse gives IT a single control plane to track agent usage, enforce standards, and measure adoption across the organization.
Last verified
September 27, 2026November 5, 2026

Where they overlap

  • Prompt Security and Singulr are both filed under Workforce AI usage security and AI model and agent security.

Where they differ, field by field

  • Prompt Security's primary category is AI firewalls and guardrails; Singulr's is AI governance.
  • Singulr is also filed under Data loss prevention.
  • Prompt Security lists Prompt Fuzzer. Singulr lists Enterprise AI and Agentic Control Plane, Singulr Assurance™ Layer and Singulr Pulse™.
  • Singulr is headquartered in Palo Alto, California, United States.
  • Prompt Security was founded in 2023.
  • Prompt Security is owned by SentinelOne, since 2025.

What it sells: Prompt Security

What Prompt Fuzzer does[4]
Prompt Fuzzer is listed under AI Security Tools on the Prompt Security site. The site describes it as an open source tool for AI vulnerability assessment.

What it sells: Singulr

What Enterprise AI and Agentic Control Plane does[5]
Singulr Runtime Governance™ is one of three runtime pillars in the Singulr platform, encircled by the Singulr Assurance™ Layer. Singulr describes the control plane as built for enterprise AI across clouds, SaaS, agentic workflows, and every AI touchpoint in the organization.
What Singulr Assurance™ Layer does
The Singulr Assurance™ Layer wraps all three runtime pillars, feeding context in and generating independent evidence on the way out. Singulr discovery covers AI services, agents, MCP servers, embedded AI, in-house applications, locally installed tools, and browser extensions.
What Singulr Pulse™ does
Singulr Pulse™ scores each discovered asset based on configuration, behavior, vendor posture, data sensitivity, user count, and role exposure. Singulr Pulse™ maintains real-time profiles of millions of AI models, services, and MCP servers.

Questions about Prompt Security and Singulr

What do Prompt Security and Singulr sell?
Prompt Security sells Prompt Fuzzer. Singulr sells Enterprise AI and Agentic Control Plane, Singulr Assurance™ Layer and Singulr Pulse™.
Are Prompt Security and Singulr in the same category?
They share Workforce AI usage security and AI model and agent security. Prompt Security's primary category is AI firewalls and guardrails and Singulr's is AI governance.
Where are Prompt Security and Singulr headquartered?
Singulr is headquartered in Palo Alto, California, United States.
When were Prompt Security and Singulr founded?
Prompt Security was founded in 2023.
Who owns Prompt Security and Singulr?
Prompt Security is owned by SentinelOne, since 2025.
Who are Prompt Security and Singulr sold to?
Singulr addresses CISOs who need to protect against AI threats while enabling innovation.
What have Prompt Security and Singulr announced recently?
March 9, 2026: Singulr AI launched Agent Pulse, extending its Unified AI Control Plane to autonomous AI agents and MCP servers.

About Prompt Security

Prompt Security offers protection for both employee use of AI tools and the apps an organization builds. Prompt Security continuously tracks prompts per day in organizations of 500 to 1,000 employees.[4][5]

Prompt Security holds that securing agentic AI is fundamentally different from securing traditional software. Prompt Security states that agents act autonomously, call tools and reason over untrusted input, so prompt injection, identity and runtime behavior have to be governed in real time and not only at the perimeter.

Prompt Security provides a security skill suite for OpenClaw, NanoClaw and Hermes agents.[6]

Prompt Security provides a tool that tracks and analyzes OpenClaw deployments across an organization. Prompt Security provides a tool that tests and hardens a system prompt against dynamic LLM-based attacks.[4][9]

Prompt Security publishes news, research, tools and analysis for security teams responding to AI threats. Prompt Security describes an AI gateway as a centralized layer between an organization's users or applications and the AI models or services they call. An AI gateway, as Prompt Security describes it, lets security teams monitor, control and secure that traffic from one place instead of instrumenting every application separately.[4]

Prompt Security curates an interactive, continuously updated directory of 471 companies building security for agentic AI, organized across 14 functional categories. Both pure-play startups and dedicated AI-security lines from larger vendors are in scope for the Prompt Security directory. Entries in the Prompt Security directory are compiled from vendor websites, product documentation, funding announcements, public company registries and analyst coverage. Placement in the Prompt Security directory reflects publicly stated capabilities, not vendor marketing tiers. Category definitions and threat coverage in the Prompt Security directory are mapped against established, independent frameworks for AI and LLM security. The full dataset behind the Prompt Security directory is open and machine-readable.[2][4][5][6][9]

Prompt Security on the record

Sources

Prompt Security full record

  1. [1]Prompt security partners with f5 to secure genai applications with a firewall for ai 302131373Prompt Security via PR Newswire · prnewswire.com · published April 30, 2024 · Tier A
  2. [2]Securing ai promptSentinelOne · sentinelone.com · undated page, accessed September 27, 2026 · Tier A
  3. [3]Sentinelone completes acquisition of prompt securitySentinelOne via The Globe and Mail · theglobeandmail.com · published September 5, 2025 · Tier A
  4. [4]Prompt Security | From SentinelOnePrompt Security · undated page, accessed October 27, 2026 · Tier A
  5. [5]AI Security | AI Glossary | Prompt SecurityPrompt Security · undated page, accessed October 27, 2026 · Tier A
  6. [6]ClawSec: A Security Skill Suite for OpenClaw AgentsPrompt Security · undated page, accessed October 27, 2026 · Tier A
  7. [7]AI Security Startups Map — Agentic AI Vendors by CategoryPrompt Security · undated page, accessed October 27, 2026 · Tier A
  8. [8]About this Map & Methodology — AI Security Startups MapPrompt Security · undated page, accessed October 27, 2026 · Tier A
  9. [9]OneClaw DashboardPrompt Security · undated page, accessed November 10, 2026 · Tier A
  10. [10]Prompt Security Pros and Cons | User Likes & DislikesG2 · undated page, accessed November 10, 2026 · Tier C

Singulr full record

  1. [1]singulr.aiSingulr · singulr.ai · undated page, accessed November 5, 2026 · Tier A
  2. [2]Singulr AI Launches Agent Pulse, Extending Its AI Governance and Control Plane to Autonomous Agents and MCPBusiness Wire · undated page, accessed November 5, 2026 · Tier A
  3. [3]CompanySingulr · singulr.ai · undated page, accessed November 5, 2026 · Tier A
  4. [4]Product - Unified AI and Agentic Control PlaneSingulr · undated page, accessed November 10, 2026 · Tier A
  5. [5]AI Governance Platform | Singulr Unified Control PlaneSingulr · undated page, accessed November 10, 2026 · Tier A
  6. [6]Singulr Runtime Governance™ | Enforceable AI Policy & Risk ControlsSingulr · undated page, accessed November 10, 2026 · Tier A
  7. [7]Singulr Runtime Control™ | Enforce AI GovernanceSingulr · undated page, accessed November 10, 2026 · Tier A
  8. [8]Singulr Runtime Security™ | AI Threat DetectionSingulr · undated page, accessed November 10, 2026 · Tier A
  9. [9]Singulr Assurance™ Layer | Continuous AI AssuranceSingulr · undated page, accessed November 10, 2026 · Tier A
  10. [10]Unified AI Control Plane | Singulr Platform FeaturesSingulr · undated page, accessed November 10, 2026 · Tier A
  11. [11]Agent PulseSingulr · undated page, accessed November 10, 2026 · Tier A
  12. [12]AI Security Platform for CISO | Singulr SolutionsSingulr · undated page, accessed November 10, 2026 · Tier A
  13. [13]AI Operations Platform for CIO | Singulr IT SolutionsSingulr · undated page, accessed November 10, 2026 · Tier A
  14. [14]AI Governance for Compliance Teams | Singulr SolutionsSingulr · undated page, accessed November 10, 2026 · Tier A

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