Patronus AI

Automated LLM eval + guardrails platform.

Try Patronus AI✓ Free trial available

Best for

Best for AI product + security teams shipping LLM apps to production.

At a glance

Pricing: enterprise
Setup time: 1 day
Learning curve: moderate
Last verified: 5/26/2026

What we love

✓Strong hallucination detection
✓Specialized eval IP
✓Real-time guardrails

Where it falls short

−Enterprise pricing
−Best for serious AI teams
−Setup effort

Pricing

✓ Pricing verified Jun 21, 2026

1 tier

Enterprise

Custom

annual

✓Full platform

Overview

Patronus AI runs automated LLM evals + guardrails — hallucination detection, PII, content safety, custom evals. Used by AI product teams + security teams.

Key features

●Automated LLM evals
●Hallucination detection
●PII + content safety
●Custom evals
●Guardrails API

Best use cases

Pre-deploy LLM eval

Run rigorous evals before shipping LLM features to production.

Real-time guardrails

Apply real-time guardrails (PII, safety, hallucination) on LLM output.

Integrations

OpenAI

Anthropic

LangChain

REST API

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