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

[Guardian Agent](https://cybersectools.com/tools/guardian-agent) is a commercial [agentic AI security](https://cybersectools.com/categories/agentic-ai-security) solution by [NeuralTrust](https://cybersectools.com/companies/neuraltrust). [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 5 more.

## Side-by-side comparison

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

### Use cases and capabilities

| | Guardian Agent | Onyx Platform |
|---|---|---|
| Data Exfiltration | Yes | – |
| Observability | 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

**Guardian Agent**

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

**Guardian Agent**

No integrations listed.

**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.

- [Guardian Agent](https://cybersectools.com/tools/guardian-agent) fits if you want a cloud product and you are a small business.
- [Onyx Platform](https://cybersectools.com/tools/onyx-platform) fits if you need both cloud and on-premises options.

## Guardian Agent vs Onyx Platform FAQ

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

### What is the difference between Guardian Agent and Onyx Platform?

**Guardian Agent**: Secures multi-agent AI systems against injections, abuse, and unsafe actions. Built by NeuralTrust.

**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 Guardian Agent and Onyx Platform?

**Guardian Agent** is made by NeuralTrust. **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 Guardian Agent a good alternative to Onyx Platform?

Often, yes. Guardian Agent 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

- [Guardian Agent vs Oryo](https://cybersectools.com/compare/guardian-agent-vs-oryo)
- [Guardian Agent vs General Analysis AIDR](https://cybersectools.com/compare/general-analysis-aidr-vs-guardian-agent)
- [Guardian Agent vs Archestra Enterprise MCP Platform](https://cybersectools.com/compare/archestra-enterprise-mcp-platform-vs-guardian-agent)
- [Onyx Platform vs Oryo](https://cybersectools.com/compare/onyx-platform-vs-oryo)
- [Onyx Platform vs General Analysis AIDR](https://cybersectools.com/compare/general-analysis-aidr-vs-onyx-platform)
- [Onyx Platform vs Archestra Enterprise MCP Platform](https://cybersectools.com/compare/archestra-enterprise-mcp-platform-vs-onyx-platform)

## Alternatives to each

- [See all Guardian Agent alternatives](https://cybersectools.com/alternatives/guardian-agent)
- [See all Onyx Platform alternatives](https://cybersectools.com/alternatives/onyx-platform)

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Source: https://cybersectools.com/compare/guardian-agent-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/guardian-agent.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md.

More on Guardian Agent 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