Guardrails AI

Web · Self-hosted · API

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Freedom report

One barScore 5.4

Free tierNo free tier on record
Open codeNo open-source code on record
Runs widely1 of 6 device platforms
DocumentedPlans, terms and facts published

Guardrails AI is ranked #10 of 28 in LLM security tools on Freedom251. It runs on API, Self-hosted, Web.

Compared on LLM security tools

Prompt injection defense: Yes
PII redaction: Yes
Secrets detection: Yes
Output guardrails: Yes
Deployment model: hybrid

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The record

Purpose: Guardrails is a Python framework that detects, quantifies, and mitigates AI risks and helps generate structured data from LLMs.
Runtime protection: The framework describes low-latency, real-time protection for catching PII leaks, hallucinations, jailbreaks, and custom policy violations.
Validator library: Guardrails Hub offers 65+ community-built guardrails covering risks including hallucinations, PII, jailbreaks, and content moderation.
LLM and deployment support: The framework says it works with any LLM and can run in a cloud environment or fully on-premises.
Supported workflows: The site names chatbots, RAG pipelines, and agent workflows as use cases.
Hub access: Guardrails says API keys and accounts are no longer required to use its validators, which are available as public PyPI packages.
PII validator: The Detect PII validator uses Microsoft Presidio and can anonymize text when it detects PII.
Open source: The Guardrails product page describes the framework as open source.
Security claims: The AI Guardrails page states that Guardrails is SOC 2 Type II certified and designed for regulated industries with strict data handling requirements.
Enterprise support: The AI Guardrails page states that enterprise customers receive dedicated support and a 99.9% uptime SLA.
Pricing availability: The official pages opened did not show a price or a pricing plan for Guardrails.
Company update: Guardrails AI announced on September 8, 2026 that it had joined Harvey; its post says the co-founders and team would join Harvey’s product and engineering organization.
Product: Guardrails is a Python framework for building reliable AI applications by detecting, quantifying, and mitigating risks and generating structured data from LLMs.
Deployment: Guardrails AI says the framework can run in a user's cloud or fully on-premises and supports chatbots, RAG pipelines, and agent workflows.

Where it ranks on Freedom251

Best LLM Security Tools in 2026#10 of 28
Best AI Guardrail Software in 2026#8 of 21

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Sources

guardrailsai.com/guardrails/docs· checked 4 Oct 2026
guardrailsai.com/guardrailsoss· checked 4 Oct 2026
guardrailsai.com/hub/keys· checked 4 Oct 2026
guardrailsai.com/hub/validator/guardrails/detect_pii· checked 4 Oct 2026
guardrailsai.com/use-cases/ai-guardrails· checked 4 Oct 2026
guardrailsai.com/blog/guardrails-ai-joins-harvey· checked 4 Oct 2026
guardrailsai.com/snowglobe· checked 5 Oct 2026