CISO Tribune

Vendor comparison · 2 companies

Levo.ai vs Onyx Security

Levo.ai sells a security platform for APIs and AI assets, covering discovery, visibility and protection for API driven systems. Onyx Security sells a secure control plane for AI agents and models. 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.

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  • Levo.ai
  • Onyx Security
Levo.ai vs Onyx Security: Products, Customers and Funding Compared
Levo.aiLevo.ai sells a security platform for APIs and AI assets, covering discovery, visibility and protection for API driven systems.levo.aiOnyx SecurityOnyx Security sells a secure control plane for AI agents and models.onyx.security
What it sells
  • AI Firewall[4][6]A security and compliance layer for in-house AI applications.
  • Runtime AI Visibility[7]A kernel level, eBPF powered view of the AI control plane.
  • MCP Discovery[4][8]Discovers MCP servers across laptops, prototypes, production environments and third-party services.
  • API Inventory[4][8]Surfaces how each API behaves, where it exists and what it exposes.
  • AI Security[1][7]Onyx provides the runtime and posture layer of the Onyx Secure AI Control Plane.
  • MCP Gateway[8]The MCP Gateway governs the agent-to-tool surface.
Categories
Headquarters
San Francisco, United StatesNot stated on its pages
Founded
Not stated on its pagesNot stated on its pages
Ownership and funding
Not stated on its pagesNot stated on its pages
Named customers
Not stated on its pagesNot stated on its pages
Recent news
Not stated on its pages
  • July 29, 2026Onyx Security announced a $113 million Series B funding round led by Bessemer Venture Partners.[15]
  • March 12, 2026Onyx Security officially launched operations after securing $40 million in initial funding.[14]
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
Its named customers span North America and India and include large enterprises, fintechs and institutions. For fintech teams, Levo.ai describes security for AI systems used in fraud detection, onboarding, underwriting and payments. Levo.ai says it supports companies at all stages and offers cloud-native, hybrid and air-gapped deployment models.From its own pages, Onyx Security sells mainly to security, governance, and AI teams that need control over AI agent adoption across the enterprise. Onyx Security describes a single platform for security, governance, and infrastructure teams. Onyx Security offers cloud, hybrid, or self-hosted options for organisations with sensitive data residency requirements. Onyx Security presents one console for AI agents and models across SaaS, cloud, endpoint, and code environments. Onyx Security names security, finance, and platform teams as the teams that share its usage, cost, and policy ledger.
Last verified
November 9, 2026October 19, 2026

Where they overlap

  • Levo.ai and Onyx Security are both filed under AI model and agent security.

Where they differ, field by field

  • Levo.ai's primary category is API security; Onyx Security's is AI model and agent security.
  • Onyx Security is also filed under AI governance, Workforce AI usage security and Non-human identity security.
  • Levo.ai lists AI Firewall, Runtime AI Visibility, MCP Discovery and API Inventory. Onyx Security lists AI Security and MCP Gateway.
  • Levo.ai is headquartered in San Francisco, United States.

What it sells: Levo.ai

What AI Firewall does[4][6]
Levo gives visibility into AI transactions across prompts, agents, tool calls, API calls and downstream actions. Levo applies AI-aware data protection inline to prevent sensitive data from being exposed through prompts or responses. Levo enforces boundaries on what agents can do, which tools they can call and what parameters they can pass, inline and in real time.
What Runtime AI Visibility does[7]
Runtime AI Visibility covers agents, MCP servers, LLMs and AI applications. Levo auto discovers external and internal LLMs, agents, MCP servers, AI apps, gateways, embeddings and vector stores. Levo maps who authorized an action versus who executed it and surfaces token scopes and auth states.
What MCP Discovery does[4][8]
Levo continuously discovers MCP servers and integrates with MDM and endpoint agents to build an inventory that includes location, owner and context. Each server is enriched with ownership, environment context and usage signals, then assigned a risk score. MCP Discovery deploys via existing MDM and endpoint agents, requiring no proxies or rewrites.
What API Inventory does[4][8]
Levo's API Inventory surfaces how each API behaves, where it exists and what it exposes. Levo autonomously inventories internal, partner, third-party, shadow and zombie API endpoints. Levo maps how sensitive data flows through the APIs it discovers.

What it sells: Onyx Security

What AI Security does[1][7]
Onyx provides the runtime and posture layer of the Onyx Secure AI Control Plane. Onyx inspects every prompt, tool call, and model response inline across browser AI, coding assistants, desktop AI agents, cloud workloads, and MCP servers. Onyx offers five enforcement actions: alert, block, mask, steer, or ask.
What MCP Gateway does[8]
The MCP Gateway governs the agent-to-tool surface. Every tool call an agent makes to an MCP server gets inspected and policy-enforced. MCP Gateway coverage spans the MCP ecosystem, including servers using dynamic client registration and popular servers like GitHub.

Questions about Levo.ai and Onyx Security

What do Levo.ai and Onyx Security sell?
Levo.ai sells AI Firewall, Runtime AI Visibility, MCP Discovery and API Inventory. Onyx Security sells AI Security and MCP Gateway.
Are Levo.ai and Onyx Security in the same category?
They share AI model and agent security. Levo.ai's primary category is API security and Onyx Security's is AI model and agent security.
Where are Levo.ai and Onyx Security headquartered?
Levo.ai is headquartered in San Francisco, United States.
Who are Levo.ai and Onyx Security sold to?
Its named customers span North America and India and include large enterprises, fintechs and institutions. From its own pages, Onyx Security sells mainly to security, governance, and AI teams that need control over AI agent adoption across the enterprise.
What have Levo.ai and Onyx Security announced recently?
July 29, 2026: Onyx Security announced a $113 million Series B funding round led by Bessemer Venture Partners.

About Levo.ai

Levo.ai sells a security platform for APIs and AI assets, covering discovery, visibility and protection for API driven systems. Levo discovers and inventories APIs, AI agents, MCP servers, LLMs and vector stores through eBPF-powered runtime visibility. Levo captures auth scopes, identities and data flows across APIs and AI assets. Levo dynamically tests agents, LLMs, MCP servers and APIs for prompt injection, tool abuse, collusion and misconfigurations. Levo tracks drift, anomalies and policy violations across agents, LLM sessions, MCP orchestration and API calls. Levo enforces protection inline across APIs, agents, MCP servers and LLMs.[1][2][9]

Levo says that as enterprises adopted agents, LLMs, MCP servers and autonomous toolchains, traditional edge controls could not see or explain their behavior. Levo describes the resulting risk surface as machine-to-machine calls, prompt injection, data leakage and privilege misuse. Levo applies kernel level visibility, passive observability and dynamic security testing. Levo ties vulnerabilities in APIs, agents, MCP servers and LLMs to real traffic traces. Levo detects PHI, PII and secrets inside API payloads, AI prompts, embeddings and vector queries without sending them to the cloud.

Levo's AI Firewall is a security and compliance layer for in-house AI applications. Levo gives visibility into AI transactions across prompts, agents, tool calls, API calls and downstream actions. Levo applies AI-aware data protection inline to prevent sensitive data from being exposed through prompts or responses. Levo controls can redact, mask, block or route events to workflows based on risk and business context. Levo enforces boundaries on what agents can do, which tools they can call and what parameters they can pass, inline and in real time. Levo prevents sensitive system prompts and internal instructions from leaving the environment.[6]

Runtime AI Visibility is Levo's kernel level, eBPF powered view of the AI control plane, covering agents, MCP servers, LLMs and AI applications. Levo auto discovers external and internal LLMs, agents, MCP servers, AI apps, gateways, embeddings and vector stores, building a continuous AI bill of materials with ownership and lineage. Levo traces prompts, responses, tokens and downstream API calls across agents, MCP servers and LLMs. Levo maps who authorized an action versus who executed it, attributes non-human identities, and surfaces token scopes and auth states. Levo produces immutable, queryable trails of who acted, what data moved, where it went and under which policy. Levo covers LLMs, MCP servers, agents, AI apps and LLM apps across hybrid and multi cloud footprints.[7]

Levo continuously discovers MCP servers across developer laptops, prototypes, production environments and third-party services. Levo integrates with MDM and endpoint agents to build a living inventory that includes location, owner and context. Levo builds a single enterprise repository of MCP servers across in-house deployments and third-party sources. MCP Discovery deploys via existing MDM and endpoint agents, requiring no proxies or rewrites. When a server exhibits dangerous patterns, Levo can block those actions selectively while letting the rest of the workflow continue. Levo tests MCP servers the way they are actually used, including real authentication states, real tool paths and custom payloads. Levo continuously tests newly discovered servers and re-tests as posture changes.[8][9]

Levo's API Inventory surfaces how each API behaves, where it exists and what it exposes. Levo autonomously inventories every API across the stack, including internal, partner, third-party, shadow and zombie endpoints. Levo auto-discovers internal, partner and third-party APIs across environments and maps how sensitive data flows through them. Levo auto-classifies PII, PHI, PCI and other regulated data in motion. Levo auto-generates and executes runtime-aware, exploit-focused test payloads across APIs without manual configuration from customer teams. Levo integrates into CI/CD pipelines, not just post-release audits.[8][10]

Levo supports cloud-native, hybrid and air-gapped deployment models, including single VM setups and multi-year contracts. Levo charges based on the number of API endpoints it secures, not on arbitrary usage metrics or traffic. Levo supports companies at all stages, from 1K to 100K+ endpoints.[11]

Levo.ai closed its first set of customers across North America and India, including Square and AngelOne. Institutions such as the Insurance Information Bureau of India adopted the Levo.ai platform, along with Axis Finance, Axis Bank and Five9. Levo.ai says fintechs are infusing AI into fraud, onboarding, lending and payments, yet most systems run without guardrails. Levo secures AI systems that power fraud detection, onboarding, underwriting, payments, agent automation and customer experience. Levo simulates adversarial prompts, fraud attacks, agent exploits, threshold probing and data manipulation on staging environments.[3][8][12]

Levo.ai on the record

Sources

Levo.ai full record

  1. [1]Levo.ai Launches Unified AI Security Platform to Secure AI from Shift Left to RuntimeLevo.ai via Business Wire · businesswire.com · published October 15, 2025 · Tier A
  2. [2]levo.aiLevo.ai · levo.ai · undated page, accessed September 27, 2026 · Tier A
  3. [3]Privacy policyLevo.ai · levo.ai · undated page, accessed September 27, 2026 · Tier A
  4. [4]Levo.ai | Trusted API Security & AI Security PlatformLevo.ai · undated page, accessed October 28, 2026 · Tier A
  5. [5]About Levo.ai | From Trusted API Security Leader to AI Security PioneerLevo.ai · undated page, accessed November 10, 2026 · Tier A
  6. [6]AI Firewall to secure custom AI end to end | LevoLevo.ai · undated page, accessed November 10, 2026 · Tier A
  7. [7]Runtime AI Visibility | Levo Security PlatformLevo.ai · undated page, accessed November 10, 2026 · Tier A
  8. [8]Automated MCP Discovery for MCP Security | LevoLevo.ai · undated page, accessed November 10, 2026 · Tier A
  9. [9]MCP Security Testing for Safe MCP Server Adoption | LevoLevo.ai · undated page, accessed November 10, 2026 · Tier A
  10. [10]Continuous API Compliance for GRC and Privacy Leaders: HIPAA, PCI, GDPR evidence automationLevo.ai · undated page, accessed November 10, 2026 · Tier A
  11. [11]Levo.ai Pricing | Flexible Plans for Trusted API Security and AI SecurityLevo.ai · undated page, accessed November 10, 2026 · Tier A
  12. [12]Runtime AI Security for Fintech | Levo.aiLevo.ai · undated page, accessed November 10, 2026 · Tier A

Onyx Security full record

  1. [1]onyx.securityOnyx Security · onyx.security · undated page, accessed October 19, 2026 · Tier A
  2. [2]The Secure AI Control Plane for the Agentic Era | OnyxOnyx Security · undated page, accessed November 10, 2026 · Tier A
  3. [3]About Onyx | The Team Behind the AI Control PlaneOnyx Security · undated page, accessed November 10, 2026 · Tier A
  4. [4]One Platform to Discover and Control Every AI Agent | OnyxOnyx Security · undated page, accessed November 10, 2026 · Tier A
  5. [5]AI Observability – Discover Every Agent & Session | OnyxOnyx Security · undated page, accessed November 10, 2026 · Tier A
  6. [6]AI Agent Security | Block Prompt Injection in Real TimeOnyx Security · undated page, accessed November 10, 2026 · Tier A
  7. [7]AI Governance Platform Built for the EU AI Act | OnyxOnyx Security · undated page, accessed November 10, 2026 · Tier A
  8. [8]AI Orchestration – Governed Routing & Control | OnyxOnyx Security · undated page, accessed November 10, 2026 · Tier A
  9. [9]AI ROI Platform – Prove Value & Control Costs | OnyxOnyx Security · undated page, accessed November 10, 2026 · Tier A
  10. [10]Secure Claude Enterprise with Onyx | Anthropic IntegrationOnyx Security · undated page, accessed November 10, 2026 · Tier A
  11. [11]Secure ChatGPT Enterprise with Onyx | OpenAI IntegrationOnyx Security · undated page, accessed November 10, 2026 · Tier A
  12. [12]Secure Amazon Bedrock Agents | Onyx IntegrationOnyx Security · undated page, accessed November 10, 2026 · Tier A
  13. [13]Copilot Studio Security – Discover, Govern & Control | OnyxOnyx Security · undated page, accessed November 10, 2026 · Tier A
  14. [14]Israeli cyber firm Onyx Security launches operations with $40 million funding round | ReutersReuters · published March 12, 2026 · Tier B
  15. [15]Onyx Security Raises $113M Series B to Control Advanced AI, Quadrupling Revenue since Stealth Launch Four Months AgoBusiness Wire · published July 29, 2026 · Tier A

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