# Guardrails AI OSS

Guardrails AI OSS is an LLM Guardrails product by Guardrails AI. It runs in the cloud or on-premises (hybrid). Pricing is free.

Open-source framework for real-time LLM safety, policy & compliance enforcement.

Checked October 2026.

## What is Guardrails AI OSS?

Guardrails OSS is an open-source framework for enforcing safety, compliance, and policy controls on large language model (LLM) applications. It wraps around LLM-based workflows to validate inputs and outputs in real time before they reach end-users.

Core functionality:
- Detects and blocks risks such as PII leaks, hallucinations, jailbreak attempts, and policy violations
- Provides low-latency, real-time validation that operates as a layer around LLM applications
- Includes 65+ community-built guardrails covering risk categories including hallucination, PII, jailbreaks, and content moderation
- Allows users to define and enforce custom policies in addition to pre-built guardrails

Deployment and compatibility:
- Supports any LLM provider (referenced examples include Meta and Anthropic models)
- Can be deployed in cloud environments or fully on-premises
- Compatible with multiple use case types including chatbots, RAG pipelines, and agentic AI workflows

Ecosystem:
- Backed by a Guardrails Hub where users can browse and use community-built guardrail components
- Accompanied by documentation for integration and operation guidance
- Designed for use by enterprises, startups, and government agencies

The framework is open source and intended for teams building production AI applications who need structured enforcement of safety and policy requirements across their LLM interactions.

Tags: LLM Guardrails, LLM Security, GenAI Security, PII, Prompt Injection, RAG Security, AI Governance, Agentic AI Security, Open Source, Content Filtering

## Where it fits in your security program (NIST CSF 2.0)

- [Protect](https://cybersectools.com/guides/building-protect-program-small-team): helps you prevent attacks and keep data safe.

## Quick facts

- Category: [AI Security](https://cybersectools.com/categories/ai-security) · [LLM Guardrails](https://cybersectools.com/categories/llm-guardrails)
- Vendor: [Guardrails AI](https://cybersectools.com/companies/guardrails-ai)
- Deployment: Hybrid
- Company size fit: Startup, SMB, Mid-Market, Enterprise
- Pricing model: Free
- Features: 9 listed
- Website: guardrailsai.com

The full feature and integration lists are on the page for signed-in visitors.

## Where it ranks

No shortlist covers this product's category yet. The closest is [Best AI SOC Solutions for Business](https://cybersectools.com/shortlists/best-ai-soc-solutions).

## Guardrails AI OSS FAQ

### What is Guardrails AI OSS?

Guardrails AI OSS is a product by Guardrails AI in the LLM Guardrails category. It covers LLM Guardrails, LLM Security and GenAI Security.

### What is the pricing for Guardrails AI OSS?

Guardrails AI OSS is free. Download and setup instructions are at https://guardrailsai.com/guardrailsoss.

### What are alternatives to Guardrails AI OSS?

Alternatives to Guardrails AI OSS listed on CybersecTools:

1. [Portkey Guardrails for Bedrock](https://cybersectools.com/tools/portkey-guardrails-for-bedrock) - Configurable guardrails for Amazon Bedrock AI requests via an API gateway. (Commercial)
2. [Vijil Dome](https://cybersectools.com/tools/vijil-dome) - Runtime LLM guardrails blocking prompt injections, PII leakage & policy violations. (Commercial)
3. [Airia AI Platform Guardrails](https://cybersectools.com/tools/airia-ai-platform-guardrails) - Runtime AI guardrails securing prompts, outputs, and agent workflows. (Commercial)
4. [RealmGuard](https://cybersectools.com/tools/realm-labs-platform) - AI guardrail platform detecting harmful outputs, prompt injections & policy violations. (Commercial)
5. [AI Model Guardrails](https://cybersectools.com/tools/ai-model-guardrails) - Runtime AI guardrails platform enforcing policies on LLM prompts and responses. (Commercial)

Compare all Guardrails AI OSS alternatives at [https://cybersectools.com/alternatives/guardrails-ai-oss](https://cybersectools.com/alternatives/guardrails-ai-oss)

### What deployment and organization size does Guardrails AI OSS fit?

Guardrails AI OSS is available as cloud or on-premises (hybrid). It is listed for startups, small businesses, mid-market companies and enterprises. It is free.

## Compare Guardrails AI OSS with similar solutions

- [Guardrails AI OSS vs Portkey Guardrails for Bedrock](https://cybersectools.com/compare/guardrails-ai-oss-vs-portkey-guardrails-for-bedrock)
- [Guardrails AI OSS vs Vijil Dome](https://cybersectools.com/compare/guardrails-ai-oss-vs-vijil-dome)
- [Guardrails AI OSS vs Airia AI Platform Guardrails](https://cybersectools.com/compare/airia-ai-platform-guardrails-vs-guardrails-ai-oss)

All alternatives to Guardrails AI OSS: [/alternatives/guardrails-ai-oss](https://cybersectools.com/alternatives/guardrails-ai-oss)

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Source: https://cybersectools.com/tools/guardrails-ai-oss

For AI agents: every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md, and any compare page has a Markdown copy too (add .md to its URL).

More on Guardrails AI OSS and Guardrails AI: 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=product-md