Fiddler Guardrails is a commercial LLM guardrails solution by Fiddler AI. Promptfoo Guardrails is a commercial LLM guardrails solution by Promptfoo. Features, integrations, deployment and the company behind each one, side by side.
Guardrails for protecting LLM and agentic applications from harmful content
Adaptive LLM guardrails that self-improve via red team feedback loops.
See more solutions in this category, or build a security stack from your picks.
Based on what each listing shows: deployment, company size, price and open source.
Promptfoo Guardrails fits if you are a startup.
Common questions when comparing Fiddler Guardrails vs Promptfoo Guardrails for LLM guardrails.
Fiddler Guardrails: Guardrails for protecting LLM and agentic applications from harmful content. Built by Fiddler AI.
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.
Fiddler Guardrails is made by Fiddler AI. 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.
Often, yes. Fiddler Guardrails 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.
No LLM Guardrails shortlist yet. This is the closest one.
Updated 2026-11-02
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