# RealmGuard vs Witness Protect: side-by-side comparison (2026)

[RealmGuard](https://cybersectools.com/tools/realm-labs-platform) is a commercial [LLM guardrails](https://cybersectools.com/categories/llm-guardrails) solution by [Realm Labs](https://cybersectools.com/companies/realm-labs). [Witness Protect](https://cybersectools.com/tools/witness-protect) is a commercial [LLM guardrails](https://cybersectools.com/categories/llm-guardrails) solution by [WitnessAI](https://cybersectools.com/companies/witnessai). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | RealmGuard | Witness Protect |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | LLM Guardrails | LLM Guardrails |
| Verified | No | No |
| Deployment type | Hybrid | Cloud |
| Company size fit | SMB, Mid-Market, Enterprise | Mid-Market, Enterprise |
| Company | Realm Labs | WitnessAI |
| Headquarters | – | – |

### Use cases and capabilities

| | RealmGuard | Witness Protect |
|---|---|---|
| LLM Guardrails | Yes | – |
| LLM Security | Yes | – |
| Prompt Injection | Yes | – |
| AI Firewall | Yes | Yes |
| GenAI Security | Yes | – |
| Content Filtering | Yes | – |
| PII | Yes | Yes |
| AI Compliance | Yes | – |
| AI Governance | Yes | – |
| OWASP | Yes | – |
| Tokenization | – | Yes |

### Core features

**RealmGuard**

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

**Witness Protect**

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

### Integrations

**RealmGuard**

No integrations listed.

**Witness Protect**

2 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.

- [RealmGuard](https://cybersectools.com/tools/realm-labs-platform) fits if you need both cloud and on-premises options and you are a small business.
- [Witness Protect](https://cybersectools.com/tools/witness-protect) fits if you want a cloud product.

## RealmGuard vs Witness Protect FAQ

Common questions when comparing RealmGuard vs Witness Protect for LLM guardrails.

### What is the difference between RealmGuard and Witness Protect?

**RealmGuard**: AI guardrail platform detecting harmful outputs, prompt injections & policy violations. Built by Realm Labs.

**Witness Protect**: Enterprise AI firewall protecting AI agents, models, and chatbots from attacks. Built by WitnessAI.

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

### Who makes RealmGuard and Witness Protect?

**RealmGuard** is made by Realm Labs. **Witness Protect** is made by WitnessAI. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is RealmGuard a good alternative to Witness Protect?

Often, yes. RealmGuard and Witness Protect are both LLM Guardrails products, and both cover PII, AI Firewall. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [RealmGuard vs Senthex AI Firewall](https://cybersectools.com/compare/realm-labs-platform-vs-senthex-ai-firewall)
- [RealmGuard vs Confident Security](https://cybersectools.com/compare/confident-security-vs-realm-labs-platform)
- [RealmGuard vs Portkey Guardrails for Bedrock](https://cybersectools.com/compare/portkey-guardrails-for-bedrock-vs-realm-labs-platform)
- [Witness Protect vs Senthex AI Firewall](https://cybersectools.com/compare/senthex-ai-firewall-vs-witness-protect)
- [Witness Protect vs Confident Security](https://cybersectools.com/compare/confident-security-vs-witness-protect)
- [Witness Protect vs Portkey Guardrails for Bedrock](https://cybersectools.com/compare/portkey-guardrails-for-bedrock-vs-witness-protect)

## Alternatives to each

- [See all RealmGuard alternatives](https://cybersectools.com/alternatives/realm-labs-platform)
- [See all Witness Protect alternatives](https://cybersectools.com/alternatives/witness-protect)

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Source: https://cybersectools.com/compare/realm-labs-platform-vs-witness-protect

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

More on RealmGuard and Witness Protect: 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