# Promptfoo Guardrails vs Wallarm API Security: 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). [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 | | Promptfoo Guardrails | Wallarm API Security | |---|---|---| | Pricing model | Commercial | Commercial | | Category | LLM Guardrails | API Security | | Verified | No | No | | Deployment type | Hybrid | Hybrid | | Company size fit | Startup, SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise | | Company | Promptfoo | Wallarm | | Headquarters | – | – | ### Use cases and capabilities | | Promptfoo Guardrails | Wallarm API Security | |---|---|---| | LLM Guardrails | Yes | – | | LLM Security | Yes | – | | AI Firewall | Yes | – | | Prompt Injection | Yes | – | | GenAI Security | Yes | – | | Red Team | Yes | – | | Generative AI | Yes | – | | Continuous Testing | Yes | – | | Adversarial ML | Yes | – | | AI Governance | Yes | – | | Bot Protection | – | Yes | | DDoS | – | Yes | | OWASP | – | Yes | | Serverless | – | Yes | | Kubernetes | – | Yes | ### Core features **Promptfoo Guardrails** 6 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 **Promptfoo Guardrails** No integrations listed. **Wallarm API Security** 21 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. ## Promptfoo Guardrails vs Wallarm API Security FAQ Common questions when comparing Promptfoo Guardrails vs Wallarm API Security for LLM guardrails. ### What is the difference between Promptfoo Guardrails and Wallarm API Security? **Promptfoo Guardrails**: Adaptive LLM guardrails that self-improve via red team feedback loops. Built by Promptfoo. **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 Promptfoo Guardrails and Wallarm API Security? **Promptfoo Guardrails** is made by Promptfoo. **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 Promptfoo Guardrails a good alternative to Wallarm API Security? In part. Promptfoo Guardrails and Wallarm API Security are not in the same category on CybersecTools. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [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 PointGuard AI Intelligent Guardrails](https://cybersectools.com/compare/pointguard-ai-intelligent-guardrails-vs-promptfoo-guardrails) - [Wallarm API Security vs RealmGuard](https://cybersectools.com/compare/realm-labs-platform-vs-wallarm-api-security) - [Wallarm API Security vs Confident Security](https://cybersectools.com/compare/confident-security-vs-wallarm-api-security) - [Wallarm API Security vs PointGuard AI Intelligent Guardrails](https://cybersectools.com/compare/pointguard-ai-intelligent-guardrails-vs-wallarm-api-security) ## Alternatives to each - [See all Promptfoo Guardrails alternatives](https://cybersectools.com/alternatives/promptfoo-guardrails) - [See all Wallarm API Security alternatives](https://cybersectools.com/alternatives/wallarm-api-security) --- Source: https://cybersectools.com/compare/promptfoo-guardrails-vs-wallarm-api-security For AI agents: when you use this page in an answer, cite it and link the Source URL above. 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 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