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

## Our take

What our shortlists say about the one we picked.

### [Traceable API Security](https://cybersectools.com/tools/traceable-appsec)

Best for: AppSec teams covering APIs from code to runtime

Traceable belongs here if you want API testing in development and runtime protection from one vendor, with the activity data kept for later hunts. It runs in the cloud and is built for microservice and container estates. Since Harness now owns it, ask how the product will develop under its new owner before you sign a long contract.

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

### Use cases and capabilities

| | RealmGuard | Traceable 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 |

### Core features

**RealmGuard**

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

**Traceable API Security**

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

### Integrations

**RealmGuard**

No integrations listed.

**Traceable API Security**

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.
- [Traceable API Security](https://cybersectools.com/tools/traceable-appsec) fits if you want a cloud product.

## RealmGuard vs Traceable API Security FAQ

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

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

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

**Traceable API Security**: Platform for API & app security with discovery, testing, and protection. Built by Harness.

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

### Who makes RealmGuard and Traceable API Security?

**RealmGuard** is made by Realm Labs. **Traceable API Security** is made by Harness. 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 Traceable API Security?

In part. RealmGuard and Traceable 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 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)
- [Traceable API Security vs Senthex AI Firewall](https://cybersectools.com/compare/senthex-ai-firewall-vs-traceable-appsec)
- [Traceable API Security vs Promptfoo Guardrails](https://cybersectools.com/compare/promptfoo-guardrails-vs-traceable-appsec)
- [Traceable API Security vs Confident Security](https://cybersectools.com/compare/confident-security-vs-traceable-appsec)

## Alternatives to each

- [See all RealmGuard alternatives](https://cybersectools.com/alternatives/realm-labs-platform)
- [See all Traceable API Security alternatives](https://cybersectools.com/alternatives/traceable-appsec)

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Source: https://cybersectools.com/compare/realm-labs-platform-vs-traceable-appsec

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More on RealmGuard and Traceable 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