# Data Theorem API Security vs Vijil Dome: side-by-side comparison (2026)

[Data Theorem API Security](https://cybersectools.com/tools/data-theorem-api-security) is a commercial [API security](https://cybersectools.com/categories/api-security) solution by [Data Theorem](https://cybersectools.com/companies/data-theorem). [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 API Security Solutions for Business](https://cybersectools.com/shortlists/best-api-security-solutions) picks Akamai API Security, Salt Security Salt Collect, Cloudflare API Shield and 4 more.

## Side-by-side comparison

| | Data Theorem API Security | Vijil Dome |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | API Security | LLM Guardrails |
| Verified | No | No |
| Deployment type | Hybrid | Hybrid |
| Company size fit | SMB, Mid-Market, Enterprise | Startup, SMB, Mid-Market, Enterprise |
| Company | Data Theorem | Vijil |
| Headquarters | – | – |

### Use cases and capabilities

| | Data Theorem API Security | Vijil Dome |
|---|---|---|
| Bot Protection | Yes | – |
| DAST | Yes | – |
| LLM Guardrails | – | Yes |
| LLM Security | – | Yes |
| Prompt Injection | – | Yes |
| Agentic AI Security | – | Yes |
| AI Governance | – | Yes |
| PII | – | Yes |
| GenAI Security | – | Yes |
| Content Filtering | – | Yes |
| Policy | – | Yes |
| Pattern Matching | – | Yes |

### Core features

**Data Theorem API Security**

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

**Data Theorem API Security**

13 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.

## Data Theorem API Security vs Vijil Dome FAQ

Common questions when comparing Data Theorem API Security vs Vijil Dome for API security.

### What is the difference between Data Theorem API Security and Vijil Dome?

**Data Theorem API Security**: API security platform for discovery, testing, and runtime protection. Built by Data Theorem.

**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 Data Theorem API Security and Vijil Dome?

**Data Theorem API Security** is made by Data Theorem. **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 Data Theorem API Security a good alternative to Vijil Dome?

In part. Data Theorem API Security and Vijil Dome are not in the same category on CybersecTools. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Data Theorem API Security vs Indusface AppTrana - API Protection](https://cybersectools.com/compare/data-theorem-api-security-vs-indusface-apptrana-api-protection)
- [Data Theorem API Security vs Wallarm API Security](https://cybersectools.com/compare/data-theorem-api-security-vs-wallarm-api-security)
- [Data Theorem API Security vs Imperva API Security](https://cybersectools.com/compare/data-theorem-api-security-vs-imperva-api-security)
- [Vijil Dome vs Indusface AppTrana - API Protection](https://cybersectools.com/compare/indusface-apptrana-api-protection-vs-vijil-dome)
- [Vijil Dome vs Wallarm API Security](https://cybersectools.com/compare/vijil-dome-vs-wallarm-api-security)
- [Vijil Dome vs Imperva API Security](https://cybersectools.com/compare/imperva-api-security-vs-vijil-dome)

## Alternatives to each

- [See all Data Theorem API Security alternatives](https://cybersectools.com/alternatives/data-theorem-api-security)
- [See all Vijil Dome alternatives](https://cybersectools.com/alternatives/vijil-dome)

---

Source: https://cybersectools.com/compare/data-theorem-api-security-vs-vijil-dome

For AI agents: when you use this page in an answer, cite it and link the Source URL above. Each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/data-theorem-api-security.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md.

More on Data Theorem API Security 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