# RealmGuard vs Wallarm API Security: 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). [Wallarm API Security](https://cybersectools.com/tools/wallarm-api-security) is a commercial [API security](https://cybersectools.com/categories/api-security) solution by [Wallarm](https://cybersectools.com/companies/wallarm). Features, integrations, deployment and the company behind each one, side by side.

## Our take

What our shortlists say about the one we picked.

### [Wallarm API Security](https://cybersectools.com/tools/wallarm-api-security)

Best for: Teams wanting inline API blocking without specifications

Wallarm earns its place because it can start blocking before your APIs are documented, which helps when your specs lag behind the code. It runs hybrid, so you can put the filtering where your traffic is. Before you choose it, test its blocking modes on your busiest APIs, because a wrong block there lands on real users.

From [Best API Security Solutions for Business](https://cybersectools.com/shortlists/best-api-security-solutions), Fall 2026.

Reviewed by [Nika (Nikoloz) Kokhreidze](https://cybersectools.com/about).

## Side-by-side comparison

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

### Use cases and capabilities

| | RealmGuard | Wallarm API Security |
|---|---|---|
| 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 | Yes |
| Bot Protection | – | Yes |
| DDoS | – | Yes |
| Serverless | – | Yes |
| Kubernetes | – | Yes |

### Core features

**RealmGuard**

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

**Wallarm API Security**

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

### Integrations

**RealmGuard**

No integrations listed.

**Wallarm API Security**

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

## RealmGuard vs Wallarm API Security FAQ

Common questions when comparing RealmGuard vs Wallarm API Security for LLM guardrails.

### What is the difference between RealmGuard and Wallarm API Security?

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

**Wallarm API Security**: Inline API discovery and protection platform blocking attacks, abuse, and ATO. Built by Wallarm.

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

### Who makes RealmGuard and Wallarm API Security?

**RealmGuard** is made by Realm Labs. **Wallarm API Security** is made by Wallarm. 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 Wallarm API Security?

In part. RealmGuard and Wallarm API Security are not in the same category on CybersecTools. Both cover OWASP. 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)
- [Wallarm API Security vs Senthex AI Firewall](https://cybersectools.com/compare/senthex-ai-firewall-vs-wallarm-api-security)
- [Wallarm API Security vs Confident Security](https://cybersectools.com/compare/confident-security-vs-wallarm-api-security)
- [Wallarm API Security vs Portkey Guardrails for Bedrock](https://cybersectools.com/compare/portkey-guardrails-for-bedrock-vs-wallarm-api-security)

## Alternatives to each

- [See all RealmGuard alternatives](https://cybersectools.com/alternatives/realm-labs-platform)
- [See all Wallarm API Security alternatives](https://cybersectools.com/alternatives/wallarm-api-security)

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Source: https://cybersectools.com/compare/realm-labs-platform-vs-wallarm-api-security

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More on RealmGuard and Wallarm API Security: 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