# Opsin vs RealmGuard: side-by-side comparison (2026)

[Opsin](https://cybersectools.com/tools/opsin) is a commercial [AI SPM](https://cybersectools.com/categories/ai-spm) solution by [Opsin](https://cybersectools.com/companies/opsin). [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.

Need the answer fast? [Best AI SPM Solutions for Business](https://cybersectools.com/shortlists/best-ai-spm-solutions) picks Palo Alto Networks Prisma AIRS, Zscaler AI-SPM, Cyera Agent Guardian and 4 more.

## Side-by-side comparison

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

### Use cases and capabilities

| | Opsin | RealmGuard |
|---|---|---|
| AI SPM | Yes | – |
| AI Governance | Yes | Yes |
| Shadow AI | Yes | – |
| GenAI Security | Yes | Yes |
| Microsoft 365 | Yes | – |
| AI Copilot | Yes | – |
| Sensitive Data | Yes | – |
| Misconfiguration | Yes | – |
| AI Observability | Yes | – |
| Agentic AI Security | Yes | – |
| LLM Guardrails | – | Yes |
| LLM Security | – | Yes |
| Prompt Injection | – | Yes |
| AI Firewall | – | Yes |
| Content Filtering | – | Yes |
| PII | – | Yes |
| AI Compliance | – | Yes |
| OWASP | – | Yes |

### Core features

**Opsin**

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

**RealmGuard**

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

### Integrations

**Opsin**

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

**RealmGuard**

No integrations listed.

## Which one fits you

Based on what each listing shows: deployment, company size, price and open source.

- [Opsin](https://cybersectools.com/tools/opsin) 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 and you are a small business.

## Opsin vs RealmGuard FAQ

Common questions when comparing Opsin vs RealmGuard for AI SPM.

### What is the difference between Opsin and RealmGuard?

**Opsin**: AI security platform to discover, govern & monitor AI data exposure risks. Built by Opsin.

**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 Opsin and RealmGuard?

**Opsin** is made by Opsin. **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 Opsin a good alternative to RealmGuard?

In part. Opsin and RealmGuard are not in the same category on CybersecTools. Both cover GenAI Security, AI Governance. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Opsin vs Aurascape](https://cybersectools.com/compare/aurascape-vs-opsin)
- [Opsin vs Airia AI Discovery](https://cybersectools.com/compare/airia-ai-discovery-vs-opsin)
- [Opsin vs Aona AI](https://cybersectools.com/compare/aona-ai-vs-opsin)
- [RealmGuard vs Aurascape](https://cybersectools.com/compare/aurascape-vs-realm-labs-platform)
- [RealmGuard vs Airia AI Discovery](https://cybersectools.com/compare/airia-ai-discovery-vs-realm-labs-platform)
- [RealmGuard vs Aona AI](https://cybersectools.com/compare/aona-ai-vs-realm-labs-platform)

## Alternatives to each

- [See all Opsin alternatives](https://cybersectools.com/alternatives/opsin)
- [See all RealmGuard alternatives](https://cybersectools.com/alternatives/realm-labs-platform)

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Source: https://cybersectools.com/compare/opsin-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/opsin.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md.

More on Opsin 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