# DeepKeep AI Firewall vs Promptfoo Guardrails: side-by-side comparison (2026)

[DeepKeep AI Firewall](https://cybersectools.com/tools/deepkeep-ai-firewall) is a commercial [LLM guardrails](https://cybersectools.com/categories/llm-guardrails) solution by [DeepKeep](https://cybersectools.com/companies/deepkeep). [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

| | DeepKeep AI Firewall | Promptfoo Guardrails |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | LLM Guardrails | LLM Guardrails |
| Verified | No | No |
| Deployment type | Hybrid | Hybrid |
| Company size fit | Mid-Market, Enterprise | Startup, SMB, Mid-Market, Enterprise |
| Company | DeepKeep | Promptfoo |
| Headquarters | – | – |

### Use cases and capabilities

| | DeepKeep AI Firewall | Promptfoo Guardrails |
|---|---|---|
| Policy | Yes | – |
| AI Firewall | Yes | Yes |
| LLM Guardrails | – | Yes |
| LLM Security | – | Yes |
| Prompt Injection | – | Yes |
| GenAI Security | – | Yes |
| Red Team | – | Yes |
| Generative AI | – | Yes |
| Continuous Testing | – | Yes |
| Adversarial ML | – | Yes |
| AI Governance | – | Yes |

### Core features

**DeepKeep AI Firewall**

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

**Promptfoo Guardrails**

6 features 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.

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

## DeepKeep AI Firewall vs Promptfoo Guardrails FAQ

Common questions when comparing DeepKeep AI Firewall vs Promptfoo Guardrails for LLM guardrails.

### What is the difference between DeepKeep AI Firewall and Promptfoo Guardrails?

**DeepKeep AI Firewall**: Runtime protection firewall for AI systems and applications. Built by DeepKeep.

**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 DeepKeep AI Firewall and Promptfoo Guardrails?

**DeepKeep AI Firewall** is made by DeepKeep founded in 2021-01-01T00:00:00.000Z. **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 DeepKeep AI Firewall a good alternative to Promptfoo Guardrails?

Often, yes. DeepKeep AI Firewall and Promptfoo Guardrails are both LLM Guardrails products, and both cover AI Firewall. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [DeepKeep AI Firewall vs Confident Security](https://cybersectools.com/compare/confident-security-vs-deepkeep-ai-firewall)
- [DeepKeep AI Firewall vs RealmGuard](https://cybersectools.com/compare/deepkeep-ai-firewall-vs-realm-labs-platform)
- [DeepKeep AI Firewall vs First Recon AI Firewall](https://cybersectools.com/compare/deepkeep-ai-firewall-vs-first-recon-ai-firewall)
- [Promptfoo Guardrails vs Confident Security](https://cybersectools.com/compare/confident-security-vs-promptfoo-guardrails)
- [Promptfoo Guardrails vs RealmGuard](https://cybersectools.com/compare/promptfoo-guardrails-vs-realm-labs-platform)
- [Promptfoo Guardrails vs First Recon AI Firewall](https://cybersectools.com/compare/first-recon-ai-firewall-vs-promptfoo-guardrails)

## Alternatives to each

- [See all DeepKeep AI Firewall alternatives](https://cybersectools.com/alternatives/deepkeep-ai-firewall)
- [See all Promptfoo Guardrails alternatives](https://cybersectools.com/alternatives/promptfoo-guardrails)

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

More on DeepKeep AI Firewall 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