# Helmet Platform vs Onyx Platform: side-by-side comparison (2026)

[Helmet Platform](https://cybersectools.com/tools/helmet-platform) is a commercial [agentic AI security](https://cybersectools.com/categories/agentic-ai-security) solution by [Helmet Security](https://cybersectools.com/companies/helmet-security). [Onyx Platform](https://cybersectools.com/tools/onyx-platform) is a commercial [agentic AI security](https://cybersectools.com/categories/agentic-ai-security) solution by [Onyx Security](https://cybersectools.com/companies/onyx-security). Features, integrations, deployment and the company behind each one, side by side.

Need the answer fast? [Best Agentic AI Security Solutions for Business](https://cybersectools.com/shortlists/best-agentic-ai-security-solutions) picks CrowdStrike Falcon Guardian, Rubrik Agent Cloud, Silverfort AI Agent Security and 4 more.

## Side-by-side comparison

| | Helmet Platform | Onyx Platform |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | Agentic AI Security | Agentic AI Security |
| Verified | No | No |
| Deployment type | Hybrid | Hybrid |
| Company size fit | SMB, Mid-Market, Enterprise | Mid-Market, Enterprise |
| Company | Helmet Security | Onyx Security |
| Headquarters | – | – |

### Use cases and capabilities

| | Helmet Platform | Onyx Platform |
|---|---|---|
| Policy | Yes | – |
| Visibility | Yes | – |
| Gateway | Yes | – |
| Agentic AI Security | – | Yes |
| AI Governance | – | Yes |
| AI Observability | – | Yes |
| AI SPM | – | Yes |
| LLM Guardrails | – | Yes |
| LLM Security | – | Yes |
| MCP Security | – | Yes |
| Prompt Injection | – | Yes |
| Shadow AI | – | Yes |
| GenAI Security | – | Yes |

### Core features

**Helmet Platform**

10 features listed. Sign in on the page to see them.

**Onyx Platform**

10 features listed. Sign in on the page to see them.

### Integrations

**Helmet Platform**

13 integrations listed. Sign in on the page to see them.

**Onyx Platform**

11 integrations listed. Sign in on the page to see them.

## Which one fits you

Based on what each listing shows: deployment, company size, price and open source.

- [Helmet Platform](https://cybersectools.com/tools/helmet-platform) fits if you are a small business.

## Helmet Platform vs Onyx Platform FAQ

Common questions when comparing Helmet Platform vs Onyx Platform for agentic AI security.

### What is the difference between Helmet Platform and Onyx Platform?

**Helmet Platform**: AI infrastructure security platform for discovering, securing, and governing AI agents, built by Helmet Security.

**Onyx Platform**: AI control plane for enterprise AI agent security, governance, and observability, built by Onyx Security.

The table above shows where their features, integrations, deployment and company size fit differ.

### Who makes Helmet Platform and Onyx Platform?

**Helmet Platform** is made by Helmet Security. **Onyx Platform** is made by Onyx Security. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is Helmet Platform a good alternative to Onyx Platform?

Often, yes. Helmet Platform and Onyx Platform are both Agentic AI Security products. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Helmet Platform vs Autonomous Security](https://cybersectools.com/compare/autonomous-security-vs-helmet-platform)
- [Helmet Platform vs CodeIntegrity AARM Platform](https://cybersectools.com/compare/codeintegrity-aarm-platform-vs-helmet-platform)
- [Helmet Platform vs Bay Security Agentic Endpoint Security](https://cybersectools.com/compare/bay-security-agentic-endpoint-security-vs-helmet-platform)
- [Onyx Platform vs Autonomous Security](https://cybersectools.com/compare/autonomous-security-vs-onyx-platform)
- [Onyx Platform vs CodeIntegrity AARM Platform](https://cybersectools.com/compare/codeintegrity-aarm-platform-vs-onyx-platform)
- [Onyx Platform vs Bay Security Agentic Endpoint Security](https://cybersectools.com/compare/bay-security-agentic-endpoint-security-vs-onyx-platform)

## Alternatives to each

- [See all Helmet Platform alternatives](https://cybersectools.com/alternatives/helmet-platform)
- [See all Onyx Platform alternatives](https://cybersectools.com/alternatives/onyx-platform)

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Source: https://cybersectools.com/compare/helmet-platform-vs-onyx-platform

For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/helmet-platform.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md.

More on Helmet Platform and Onyx Platform: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=compare-md