# RealmGuard vs Zscaler SPLX AI Runtime Threat Inspection: 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). [Zscaler SPLX AI Runtime Threat Inspection](https://cybersectools.com/tools/zscaler-splx-ai-runtime-threat-inspection) is a commercial [LLM guardrails](https://cybersectools.com/categories/llm-guardrails) solution by [SPLX](https://cybersectools.com/companies/splx). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

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

### Use cases and capabilities

| | RealmGuard | Zscaler SPLX AI Runtime Threat Inspection |
|---|---|---|
| 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 | – |
| Anomaly Detection | – | Yes |

### Core features

**RealmGuard**

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

**Zscaler SPLX AI Runtime Threat Inspection**

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

### Integrations

**RealmGuard**

No integrations listed.

**Zscaler SPLX AI Runtime Threat Inspection**

5 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.
- [Zscaler SPLX AI Runtime Threat Inspection](https://cybersectools.com/tools/zscaler-splx-ai-runtime-threat-inspection) fits if you want a cloud product.

## RealmGuard vs Zscaler SPLX AI Runtime Threat Inspection FAQ

Common questions when comparing RealmGuard vs Zscaler SPLX AI Runtime Threat Inspection for LLM guardrails.

### What is the difference between RealmGuard and Zscaler SPLX AI Runtime Threat Inspection?

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

**Zscaler SPLX AI Runtime Threat Inspection**: Analyzes AI interaction logs for near real-time threat detection in GenAI apps. Built by SPLX.

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

### Who makes RealmGuard and Zscaler SPLX AI Runtime Threat Inspection?

**RealmGuard** is made by Realm Labs. **Zscaler SPLX AI Runtime Threat Inspection** is made by SPLX. 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 Zscaler SPLX AI Runtime Threat Inspection?

Often, yes. RealmGuard and Zscaler SPLX AI Runtime Threat Inspection are both LLM Guardrails products. 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 Promptfoo Guardrails](https://cybersectools.com/compare/promptfoo-guardrails-vs-realm-labs-platform)
- [RealmGuard vs Confident Security](https://cybersectools.com/compare/confident-security-vs-realm-labs-platform)
- [Zscaler SPLX AI Runtime Threat Inspection vs Senthex AI Firewall](https://cybersectools.com/compare/senthex-ai-firewall-vs-zscaler-splx-ai-runtime-threat-inspection)
- [Zscaler SPLX AI Runtime Threat Inspection vs Promptfoo Guardrails](https://cybersectools.com/compare/promptfoo-guardrails-vs-zscaler-splx-ai-runtime-threat-inspection)
- [Zscaler SPLX AI Runtime Threat Inspection vs Confident Security](https://cybersectools.com/compare/confident-security-vs-zscaler-splx-ai-runtime-threat-inspection)

## Alternatives to each

- [See all RealmGuard alternatives](https://cybersectools.com/alternatives/realm-labs-platform)
- [See all Zscaler SPLX AI Runtime Threat Inspection alternatives](https://cybersectools.com/alternatives/zscaler-splx-ai-runtime-threat-inspection)

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Source: https://cybersectools.com/compare/realm-labs-platform-vs-zscaler-splx-ai-runtime-threat-inspection

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 Zscaler SPLX AI Runtime Threat Inspection: 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