# Moderation & Policy Engine vs Promptfoo Guardrails: side-by-side comparison (2026)

[Moderation & Policy Engine](https://cybersectools.com/tools/moderation-and-policy-engine) is a commercial [LLM guardrails](https://cybersectools.com/categories/llm-guardrails) solution by [NeuralTrust](https://cybersectools.com/companies/neuraltrust). [Promptfoo Guardrails](https://cybersectools.com/tools/promptfoo-guardrails) is a commercial [LLM guardrails](https://cybersectools.com/categories/llm-guardrails) solution by [Promptfoo](https://cybersectools.com/companies/promptfoo). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

| | Moderation & Policy Engine | Promptfoo Guardrails |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | LLM Guardrails | LLM Guardrails |
| Verified | No | No |
| Deployment type | Hybrid | Hybrid |
| Company size fit | SMB, Mid-Market, Enterprise | Startup, SMB, Mid-Market, Enterprise |
| Company | NeuralTrust | Promptfoo |
| Headquarters | – | – |

### Use cases and capabilities

| | Moderation & Policy Engine | Promptfoo Guardrails |
|---|---|---|
| Content Filtering | Yes | – |
| Generative AI | Yes | Yes |
| LLM Guardrails | – | Yes |
| LLM Security | – | Yes |
| AI Firewall | – | Yes |
| Prompt Injection | – | Yes |
| GenAI Security | – | Yes |
| Red Team | – | Yes |
| Continuous Testing | – | Yes |
| Adversarial ML | – | Yes |
| AI Governance | – | Yes |

### Core features

**Moderation & Policy Engine**

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

**Promptfoo Guardrails**

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

### Integrations

**Moderation & Policy Engine**

1 integration listed. Sign in on the page to see them.

**Promptfoo Guardrails**

No integrations listed.

## Which one fits you

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

- [Promptfoo Guardrails](https://cybersectools.com/tools/promptfoo-guardrails) fits if you are a startup.

## Moderation & Policy Engine vs Promptfoo Guardrails FAQ

Common questions when comparing Moderation & Policy Engine vs Promptfoo Guardrails for LLM guardrails.

### What is the difference between Moderation & Policy Engine and Promptfoo Guardrails?

**Moderation & Policy Engine**: Content moderation & policy enforcement for LLM applications, built by NeuralTrust.

**Promptfoo Guardrails**: Adaptive LLM guardrails that self-improve via red team feedback loops, built by Promptfoo.

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

### Who makes Moderation & Policy Engine and Promptfoo Guardrails?

**Moderation & Policy Engine** is made by NeuralTrust. **Promptfoo Guardrails** is made by Promptfoo. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is Moderation & Policy Engine a good alternative to Promptfoo Guardrails?

Often, yes. Moderation & Policy Engine and Promptfoo Guardrails are both LLM Guardrails products, and both cover Generative AI. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Moderation & Policy Engine vs RealmGuard](https://cybersectools.com/compare/moderation-and-policy-engine-vs-realm-labs-platform)
- [Moderation & Policy Engine vs Confident Security](https://cybersectools.com/compare/confident-security-vs-moderation-and-policy-engine)
- [Moderation & Policy Engine vs Airia AI Platform Guardrails](https://cybersectools.com/compare/airia-ai-platform-guardrails-vs-moderation-and-policy-engine)
- [Promptfoo Guardrails vs RealmGuard](https://cybersectools.com/compare/promptfoo-guardrails-vs-realm-labs-platform)
- [Promptfoo Guardrails vs Confident Security](https://cybersectools.com/compare/confident-security-vs-promptfoo-guardrails)
- [Promptfoo Guardrails vs Airia AI Platform Guardrails](https://cybersectools.com/compare/airia-ai-platform-guardrails-vs-promptfoo-guardrails)

## Alternatives to each

- [See all Moderation & Policy Engine alternatives](https://cybersectools.com/alternatives/moderation-and-policy-engine)
- [See all Promptfoo Guardrails alternatives](https://cybersectools.com/alternatives/promptfoo-guardrails)

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Source: https://cybersectools.com/compare/moderation-and-policy-engine-vs-promptfoo-guardrails

For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/moderation-and-policy-engine.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md.

More on Moderation & Policy Engine and Promptfoo Guardrails: 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