# Promptfoo Guardrails vs SlashLLM: side-by-side comparison (2026)

[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). [SlashLLM](https://cybersectools.com/tools/slashllm) is a commercial [LLM guardrails](https://cybersectools.com/categories/llm-guardrails) solution by [SlashLLM](https://cybersectools.com/companies/slashllm). Features, integrations, deployment and the company behind each one, side by side.

## Side-by-side comparison

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

### Use cases and capabilities

| | Promptfoo Guardrails | SlashLLM |
|---|---|---|
| LLM Guardrails | Yes | Yes |
| LLM Security | Yes | Yes |
| AI Firewall | Yes | – |
| Prompt Injection | Yes | Yes |
| GenAI Security | Yes | Yes |
| Red Team | Yes | – |
| Generative AI | Yes | – |
| Continuous Testing | Yes | – |
| Adversarial ML | Yes | – |
| AI Governance | Yes | Yes |
| AI Gateway | – | Yes |
| AI Observability | – | Yes |
| AI SOC | – | Yes |
| AI Compliance | – | Yes |
| Agentic AI Security | – | Yes |

### Core features

**Promptfoo Guardrails**

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

**SlashLLM**

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

### Integrations

**Promptfoo Guardrails**

No integrations listed.

**SlashLLM**

8 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.

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

## Promptfoo Guardrails vs SlashLLM FAQ

Common questions when comparing Promptfoo Guardrails vs SlashLLM for LLM guardrails.

### What is the difference between Promptfoo Guardrails and SlashLLM?

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

**SlashLLM**: AI security platform proxying LLM traffic with guardrails, SOC, and governance, built by SlashLLM.

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

### Who makes Promptfoo Guardrails and SlashLLM?

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

### Is Promptfoo Guardrails a good alternative to SlashLLM?

Often, yes. Promptfoo Guardrails and SlashLLM are both LLM Guardrails products, and both cover LLM Security, LLM Guardrails, Prompt Injection. Use the table above to see where features, deployment and company size fit differ.

## Related comparisons

- [Promptfoo Guardrails vs Confident Security](https://cybersectools.com/compare/confident-security-vs-promptfoo-guardrails)
- [Promptfoo Guardrails vs Portkey Guardrails for Bedrock](https://cybersectools.com/compare/portkey-guardrails-for-bedrock-vs-promptfoo-guardrails)
- [Promptfoo Guardrails vs ThirdLaw AI Control Layer](https://cybersectools.com/compare/promptfoo-guardrails-vs-thirdlaw-ai-control-layer)
- [SlashLLM vs Confident Security](https://cybersectools.com/compare/confident-security-vs-slashllm)
- [SlashLLM vs Portkey Guardrails for Bedrock](https://cybersectools.com/compare/portkey-guardrails-for-bedrock-vs-slashllm)
- [SlashLLM vs ThirdLaw AI Control Layer](https://cybersectools.com/compare/slashllm-vs-thirdlaw-ai-control-layer)

## Alternatives to each

- [See all Promptfoo Guardrails alternatives](https://cybersectools.com/alternatives/promptfoo-guardrails)
- [See all SlashLLM alternatives](https://cybersectools.com/alternatives/slashllm)

---

Source: https://cybersectools.com/compare/promptfoo-guardrails-vs-slashllm

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

More on Promptfoo Guardrails and SlashLLM: 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