Promptfoo Guardrails is a commercial LLM guardrails solution by Promptfoo. Zscaler SPLX AI Runtime Threat Inspection is a commercial LLM guardrails solution by SPLX. Features, integrations, deployment and the company behind each one, side by side.
Adaptive LLM guardrails that self-improve via red team feedback loops.
Analyzes AI interaction logs for near real-time threat detection in GenAI apps
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 need both cloud and on-premises options and you are a startup.
Zscaler SPLX AI Runtime Threat Inspection fits if you want a cloud product.
Common questions when comparing Promptfoo Guardrails vs Zscaler SPLX AI Runtime Threat Inspection for LLM guardrails.
Promptfoo Guardrails: Adaptive LLM guardrails that self-improve via red team feedback loops. Built by Promptfoo.
Zscaler SPLX AI Runtime Threat Inspection: Analyzes AI interaction logs for near real-time threat detection in GenAI apps. Built by SPLX.
The table above shows where their features, integrations, deployment and company size fit differ.
Promptfoo Guardrails is made by Promptfoo. Zscaler SPLX AI Runtime Threat Inspection is made by SPLX. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.
Often, yes. Promptfoo Guardrails and Zscaler SPLX AI Runtime Threat Inspection are both LLM Guardrails products. 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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