CISO Tribune

Vendor comparison · 2 companies

Operant AI vs Pluto Security

Operant AI sells one platform covering Endpoints, Agents, MCPs, and AI applications. Pluto Security sells security for what people build with AI. CISO Tribune files both under 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.

Change the companies

Up to four companies side by side.

  • Operant AI
  • Pluto Security
Operant AI vs Pluto Security: Products, Customers and Funding Compared
Operant AIOperant AI sells one platform covering Endpoints, Agents, MCPs, and AI applications.operant.aiPluto SecurityPluto Security sells security for what people build with AI.pluto.security
What it sells
  • Operant Semantic Firewall[1][7]Understands the intent behind every agent action and enforces an allow, block, or redact decision inline, in real time.
  • Agent Protector[1][5][6]Inventories all AI agents operating within an organization's infrastructure.
  • Explorer[1]Discovers and maps the AI tools, agents and extensions in use across an organization's endpoints, cloud and SaaS.
  • Risk radar[1]Evaluates discovered AI tools and agents against a risk database to triage them.
  • Space Shield[1]Applies and enforces policies that control what AI tools and agents are permitted to do based on context.
  • Marketspace[1]Offers a curated catalog of vetted AI add-ons that employees can adopt.
Categories
Headquarters
San Francisco, United States[2]Not stated on its pages
Founded
Not stated on its pagesNot stated on its pages
Ownership and funding
Privately held[1][3]Privately held
Named customers
Not stated on its pagesNot stated on its pages
Recent news
  • May 4, 2026Operant AI launched Operant Endpoint Protector, a new addition to its AI Defense Platform for discovering and defending against threats across AI tools and coding agents.[4]
  • October 13, 2026Pluto Security announced its emergence from stealth with $42 million in total funding and said it has over 40 enterprise customers.[7]
  • June 17, 2026Pluto Security launched Plutonium, a free, vendor-neutral security hub covering the AI assistant ecosystem.[6]
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
It describes plans for teams putting their first production AI into customers' hands and for companies running AI across teams and products with critical data and compliance requirements. Its pages say regulated and government deployments mostly use the VPC, on-premise, or air-gapped options on the Enterprise plan. Workloads it covers range from coding agents on employee laptops to cloud agents across any infra.From its own pages, Pluto Security sells mainly to security teams and CISOs who want to let employees use AI tools without blocking them. It names a Fortune 500 health insurance company among the kinds of customers quoted. Its about page describes protecting AI builders, developer tools, and business workspaces.
Last verified
September 27, 2026October 16, 2026

Where they overlap

  • Operant AI and Pluto Security are both filed under AI model and agent security.
  • Both are privately held.

Where they differ, field by field

  • Operant AI's primary category is AI firewalls and guardrails; Pluto Security's is Workforce AI usage security.
  • Pluto Security is also filed under Software supply chain security.
  • Operant AI lists Operant Semantic Firewall and Agent Protector. Pluto Security lists Explorer, Risk radar, Space Shield and Marketspace.
  • Operant AI is headquartered in San Francisco, United States.

What it sells: Operant AI

What Operant Semantic Firewall does[1][7]
Operant Semantic Firewall holds an agent to its assigned purpose across the whole session, catching drift from manipulation or its own initiative. Operant can redact the sensitive part of an action and let the agent keep working within scope, instead of killing the workflow.
What Agent Protector does[1][5][6]
Agent Protector covers managed agents deployed through official channels and unmanaged agents running in cloud environments, SaaS platforms, and development tools. Agent Protector analyzes agent behavior patterns to identify and prevent security threats before they execute.

Questions about Operant AI and Pluto Security

What do Operant AI and Pluto Security sell?
Operant AI sells Operant Semantic Firewall and Agent Protector. Pluto Security sells Explorer, Risk radar, Space Shield and Marketspace.
Are Operant AI and Pluto Security in the same category?
They share AI model and agent security. Operant AI's primary category is AI firewalls and guardrails and Pluto Security's is Workforce AI usage security.
Where are Operant AI and Pluto Security headquartered?
Operant AI is headquartered in San Francisco, United States.
Who owns Operant AI and Pluto Security?
Operant AI is privately held. Pluto Security is privately held.
Who are Operant AI and Pluto Security sold to?
It describes plans for teams putting their first production AI into customers' hands and for companies running AI across teams and products with critical data and compliance requirements. From its own pages, Pluto Security sells mainly to security teams and CISOs who want to let employees use AI tools without blocking them.
What have Operant AI and Pluto Security announced recently?
May 4, 2026: Operant AI launched Operant Endpoint Protector, a new addition to its AI Defense Platform for discovering and defending against threats across AI tools and coding agents. October 13, 2026: Pluto Security announced its emergence from stealth with $42 million in total funding and said it has over 40 enterprise customers.

About Operant AI

Operant AI sells one platform covering Endpoints, Agents, MCPs, and AI applications. Operant AI describes its platform as discovering, detecting, and defending all AI, agents, and MCP in real time. Operant AI says many customers start with Endpoint Protector or Agent Protector and add MCP Gateway and AI Gatekeeper as their AI footprint expands. Operant AI says all plans include the full Operant platform and differ in depth, deployment options, and the level of partnership.[5]

Endpoint Protector enforces AI trust boundaries on the laptop. Endpoint Protector discovers Shadow AI tools, coding agents, and MCP clients on employee devices. Endpoint Protector monitors agent loops and blocks prompt injection, data exfiltration, and malicious shell execution directly on the device. Operant AI's endpoint coverage provides governance and runtime detection for coding and coworking agents running on employee endpoints.[5]

Agent Protector inventories all AI agents operating within an organization's infrastructure. Agent Protector covers managed agents deployed through official channels and unmanaged agents running in cloud environments, SaaS platforms, and development tools. Agent Protector blocks the action inline when an agent attempts to access resources outside its established patterns, escalate privileges, or exhibit signs of data exfiltration. Agent Protector analyzes agent behavior patterns to identify and prevent security threats before they execute. Agent Protector monitors behavior, detects threats, and blocks attacks from zero-click exploits to data exfiltration and rogue agents. Operant AI's cloud agent coverage provides runtime security for homegrown and cloud-native agents, with support for AWS and Azure.[5][6]

Operant Semantic Firewall understands the intent behind every agent action and enforces an allow, block, or redact decision inline, in real time. Operant AI reads the meaning of every prompt, plan, tool call, command, and data payload before it executes. Operant Semantic Firewall holds an agent to its assigned purpose across the whole session, catching drift from manipulation or its own initiative. Operant Semantic Firewall enforces access by data sensitivity, honoring the classification labels governance tools already set. Operant AI can redact the sensitive part of an action and let the agent keep working within scope, instead of killing the workflow.[7]

Operant AI provides visibility and controls for every MCP server, client, tool, and connection in an environment, with MCP registries, white list and black lists, and NHI access controls. Operant AI catalogs MCP tools and discovers AI agents in real time across all environments. Operant AI detects prompt injections, jailbreaks, tool poisoning, and unauthorized access patterns across all MCP client and server interactions in real time. Operant AI implements MCP trust zones with real-time blocking of untrusted servers and tools. Operant AI prevents leaks of sensitive data and intellectual property through flow blocking and automatic redaction. Operant AI enforces least privilege execution controls and detailed access permissions for MCP tool usage.[8]

AI Gatekeeper detects and blocks unauthenticated and unauthorized AI behavior in real time. Operant AI's AI application coverage is an LLM gateway with native firewall, offering multi-provider routing, request inspection, and traffic security for every AI application. Operant AI's 3D Runtime Defense provides real-time security across every cluster and every cloud, from infra to APIs. Operant AI detects and prioritizes AI-specific risks such as prompt injection, LLM poisoning, model theft, and sensitive data leakage. Operant AI applies in-line auto-redaction and obfuscation of sensitive and PII data.[5][9][10]

Operant API & Cloud Protector catches and blocks malicious traffic at ingress and egress. Operant AI protects internal and third party API interactions with K8s-native controls for protocol specific authentication, authorization, traffic rate limiting, and API to API microsegmentation. Woodpecker provides flexible and extensible red teaming frameworks for K8s, APIs, and AI models and agents, and enables multi-layer threat simulation across runtime, APIs, and LLM integrations. Woodpecker covers prompt injection, jailbreaks, model theft, sensitive data leakage, and more.[11][12]

Operant AI describes deployment as a single step helm install with zero instrumentation and zero integrations. Operant starts in observe-only mode by default, and customers decide when and where to enable enforcement. Operant AI offers VPC, on-premise, and air-gapped deployments on the Enterprise plan. Operant AI says pricing scales with the breadth and depth of its customers' AI surface, including endpoints under management, agents in production, and the governance needed across MCPs and AI applications. Operant AI supports workloads from coding agents on employee laptops to cloud agents across any infra, including LLM apps, AI agents, MCP servers, microservices, APIs, and traditional environments. Operant AI covers SaaS agents including Glean, Salesforce Agentforce, and Microsoft Copilot.[5][9][11][12][13][14]

Operant AI on the record

Sources

Operant AI full record

  1. [1]Operant AI - Secure Your AIOperant AI · undated page, accessed September 27, 2026 · Tier A
  2. [2]Operant ai launches agent protector the first real time agentic security solution enabling safe ai agent innovation at scaleOperant AI via GlobeNewswire · globenewswire.com · published February 5, 2026 · Tier A
  3. [3]Operant ai secures 10m series a to protect the modern cloud across apis applications and aiOperant AI via GlobeNewswire · globenewswire.com · published September 12, 2024 · Tier A
  4. [4]Operant AI Endpoint Protector secures AI agents and MCP toolsHelp Net Security · published May 4, 2026 · Tier B
  5. [5]Pricing - AI & Agent Security Platform | Operant AIOperant AI · undated page, accessed November 10, 2026 · Tier A
  6. [6]Agent Protector: Real-Time AI Agent Security | OperantOperant AI · undated page, accessed November 10, 2026 · Tier A
  7. [7]Operant Semantic Firewall | Govern AI Agents in Real TimeOperant AI · undated page, accessed November 10, 2026 · Tier A
  8. [8]Operant MCP GatewayOperant AI · undated page, accessed November 10, 2026 · Tier A
  9. [9]AI GatekeeperOperant AI · undated page, accessed November 10, 2026 · Tier A
  10. [10]AI Application SecurityOperant AI · undated page, accessed November 10, 2026 · Tier A
  11. [11]API & Cloud Protector | Real-Time API Security | Operant AIOperant AI · undated page, accessed November 10, 2026 · Tier A
  12. [12]Woodpecker: Open Source Red Teaming for AI, APIs & K8sOperant AI · undated page, accessed November 10, 2026 · Tier A
  13. [13]FAQsOperant AI · undated page, accessed November 10, 2026 · Tier A
  14. [14]Start Your Free 7-Day Trial | Operant AI Security PlatformOperant AI · undated page, accessed November 10, 2026 · Tier A

Pluto Security full record

  1. [1]pluto.securityPluto Security · pluto.security · undated page, accessed October 16, 2026 · Tier A
  2. [2]About Us - Pluto SecurityPluto Security · undated page, accessed November 3, 2026 · Tier A
  3. [3]Enabling CISOs to say YES - Pluto SecurityPluto Security · undated page, accessed November 3, 2026 · Tier A
  4. [4]What Is AI Security Posture Management & What Does It Do? - Pluto SecurityPluto Security · undated page, accessed November 3, 2026 · Tier A
  5. [5]Webinar - Still saying no to AI tools because of security risks? - Pluto SecurityPluto Security · undated page, accessed November 3, 2026 · Tier A
  6. [6]Introducing PlutoniumPluto Security · published June 17, 2026 · Tier A
  7. [7]Pluto Security Emerges From Stealth With $42M in Funding to Help Enterprises Secure AI AdoptionFinanceWire (Markets Insider) · published October 13, 2026 · Tier B

Spot a factual error? Request a correction.