# Prompt Guard vs RealmGuard: side-by-side comparison (2026)

[Prompt Guard](https://cybersectools.com/tools/prompt-guard) is a commercial [LLM guardrails](https://cybersectools.com/categories/llm-guardrails) solution by [NeuralTrust](https://cybersectools.com/companies/neuraltrust). [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). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | Prompt Guard | RealmGuard |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | LLM Guardrails | LLM Guardrails |
| Verified | No | No |
| Deployment type | Hybrid | Hybrid |
| Company size fit | SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise |
| Company | NeuralTrust | Realm Labs |
| Headquarters | – | – |

### Use cases and capabilities

| | Prompt Guard | RealmGuard |
|---|---|---|
| Runtime Security | Yes | – |
| LLM Guardrails | – | Yes |
| LLM Security | – | Yes |
| Prompt Injection | – | Yes |
| AI Firewall | – | Yes |
| GenAI Security | – | Yes |
| Content Filtering | – | Yes |
| PII | – | Yes |
| AI Compliance | – | Yes |
| AI Governance | – | Yes |
| OWASP | – | Yes |

### Core features

**Prompt Guard**

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

**RealmGuard**

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

## Prompt Guard vs RealmGuard FAQ

Common questions when comparing Prompt Guard vs RealmGuard for LLM guardrails.

### What is the difference between Prompt Guard and RealmGuard?

**Prompt Guard**: Guardrail engine protecting LLM apps from prompt injections and jailbreaks. Built by NeuralTrust.

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

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

### Who makes Prompt Guard and RealmGuard?

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

### Is Prompt Guard a good alternative to RealmGuard?

Often, yes. Prompt Guard and RealmGuard are both LLM Guardrails products. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Prompt Guard vs Senthex AI Firewall](https://cybersectools.com/compare/prompt-guard-vs-senthex-ai-firewall)
- [Prompt Guard vs AI Model Guardrails](https://cybersectools.com/compare/ai-model-guardrails-vs-prompt-guard)
- [Prompt Guard vs Airia AI Platform Guardrails](https://cybersectools.com/compare/airia-ai-platform-guardrails-vs-prompt-guard)
- [RealmGuard vs Senthex AI Firewall](https://cybersectools.com/compare/realm-labs-platform-vs-senthex-ai-firewall)
- [RealmGuard vs AI Model Guardrails](https://cybersectools.com/compare/ai-model-guardrails-vs-realm-labs-platform)
- [RealmGuard vs Airia AI Platform Guardrails](https://cybersectools.com/compare/airia-ai-platform-guardrails-vs-realm-labs-platform)

## Alternatives to each

- [See all Prompt Guard alternatives](https://cybersectools.com/alternatives/prompt-guard)
- [See all RealmGuard alternatives](https://cybersectools.com/alternatives/realm-labs-platform)

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Source: https://cybersectools.com/compare/prompt-guard-vs-realm-labs-platform

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

More on Prompt Guard and RealmGuard: 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