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

[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). [Vijil Dome](https://cybersectools.com/tools/vijil-dome) is a commercial [LLM guardrails](https://cybersectools.com/categories/llm-guardrails) solution by [Vijil](https://cybersectools.com/companies/vijil). 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

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

### Use cases and capabilities

| | Onyx Platform | Vijil Dome |
|---|---|---|
| Agentic AI Security | Yes | Yes |
| AI Governance | Yes | Yes |
| AI Observability | Yes | – |
| AI SPM | Yes | – |
| LLM Guardrails | Yes | Yes |
| LLM Security | Yes | Yes |
| MCP Security | Yes | – |
| Prompt Injection | Yes | Yes |
| Shadow AI | Yes | – |
| GenAI Security | Yes | Yes |
| PII | – | Yes |
| Content Filtering | – | Yes |
| Policy | – | Yes |
| Pattern Matching | – | Yes |

### Core features

**Onyx Platform**

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

**Vijil Dome**

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

### Integrations

**Onyx Platform**

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

**Vijil Dome**

8 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.

- [Vijil Dome](https://cybersectools.com/tools/vijil-dome) fits if you are a startup or a small business.

## Onyx Platform vs Vijil Dome FAQ

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

### What is the difference between Onyx Platform and Vijil Dome?

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

**Vijil Dome**: Runtime LLM guardrails blocking prompt injections, PII leakage & policy violations. Built by Vijil.

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

### Who makes Onyx Platform and Vijil Dome?

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

### Is Onyx Platform a good alternative to Vijil Dome?

In part. Onyx Platform and Vijil Dome are not in the same category on CybersecTools. Both cover LLM Guardrails, LLM Security, Prompt Injection. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Onyx Platform vs CodeIntegrity AARM Platform](https://cybersectools.com/compare/codeintegrity-aarm-platform-vs-onyx-platform)
- [Onyx Platform vs BeyondGuard](https://cybersectools.com/compare/beyondguard-vs-onyx-platform)
- [Onyx Platform vs Evoke Security](https://cybersectools.com/compare/evoke-security-vs-onyx-platform)
- [Vijil Dome vs CodeIntegrity AARM Platform](https://cybersectools.com/compare/codeintegrity-aarm-platform-vs-vijil-dome)
- [Vijil Dome vs BeyondGuard](https://cybersectools.com/compare/beyondguard-vs-vijil-dome)
- [Vijil Dome vs Evoke Security](https://cybersectools.com/compare/evoke-security-vs-vijil-dome)

## Alternatives to each

- [See all Onyx Platform alternatives](https://cybersectools.com/alternatives/onyx-platform)
- [See all Vijil Dome alternatives](https://cybersectools.com/alternatives/vijil-dome)

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

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

More on Onyx Platform and Vijil Dome: 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