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

[Prompt Security Platform](https://cybersectools.com/tools/prompt-security-genai-solutions) is a commercial [LLM guardrails](https://cybersectools.com/categories/llm-guardrails) solution by [Prompt Security](https://cybersectools.com/companies/prompt-security). [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 Security Platform | RealmGuard |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | LLM Guardrails | LLM Guardrails |
| Verified | No | No |
| Deployment type | Cloud | Hybrid |
| Company size fit | SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise |
| Company | Prompt Security | Realm Labs |
| Headquarters | – | – |

### Use cases and capabilities

| | Prompt Security Platform | RealmGuard |
|---|---|---|
| Generative AI | Yes | – |
| Prompt Injection | Yes | Yes |
| GenAI Security | Yes | Yes |
| Shadow AI | Yes | – |
| LLM Guardrails | – | Yes |
| LLM Security | – | Yes |
| AI Firewall | – | Yes |
| Content Filtering | – | Yes |
| PII | – | Yes |
| AI Compliance | – | Yes |
| AI Governance | – | Yes |
| OWASP | – | Yes |

### Core features

**Prompt Security Platform**

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

**RealmGuard**

10 features 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.

- [Prompt Security Platform](https://cybersectools.com/tools/prompt-security-genai-solutions) fits if you want a cloud product.
- [RealmGuard](https://cybersectools.com/tools/realm-labs-platform) fits if you need both cloud and on-premises options.

## Prompt Security Platform vs RealmGuard FAQ

Common questions when comparing Prompt Security Platform vs RealmGuard for LLM guardrails.

### What is the difference between Prompt Security Platform and RealmGuard?

**Prompt Security Platform**: SentinelOne's Prompt Security: AI security platform plus open-source agent/LLM tools. Built by Prompt Security.

**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 Security Platform and RealmGuard?

**Prompt Security Platform** is made by Prompt Security. **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 Security Platform a good alternative to RealmGuard?

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

## Related comparisons

- [Prompt Security Platform vs Senthex AI Firewall](https://cybersectools.com/compare/prompt-security-genai-solutions-vs-senthex-ai-firewall)
- [Prompt Security Platform vs Confident Security](https://cybersectools.com/compare/confident-security-vs-prompt-security-genai-solutions)
- [Prompt Security Platform vs Promptfoo Guardrails](https://cybersectools.com/compare/prompt-security-genai-solutions-vs-promptfoo-guardrails)
- [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 Promptfoo Guardrails](https://cybersectools.com/compare/promptfoo-guardrails-vs-realm-labs-platform)

## Alternatives to each

- [See all Prompt Security Platform alternatives](https://cybersectools.com/alternatives/prompt-security-genai-solutions)
- [See all RealmGuard alternatives](https://cybersectools.com/alternatives/realm-labs-platform)

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Source: https://cybersectools.com/compare/prompt-security-genai-solutions-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-security-genai-solutions.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md.

More on Prompt Security Platform 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