Data as of Aug 25, 2026 · Based on 3,181,687 AI responses across 10,525 prompts · See how Parse measures this
OpenAI Guardrails provides a suite of safety and governance tools for AI outputs, enabling organizations to deploy AI with built-in protections. It offers features such as PII masking, content moderation, jailbreak and prompt-injection detection, off-topic and custom prompt checks, URL filtering, PII and hallucination checks, NSFW detection, and agentic guardrails to ensure outputs stay within policy and safety constraints. The service emphasizes configurable, latency-scored checks and integrations to block or filter outputs based on defined criteria.
Parse Score
#45 of 72 in LLM Output Monitoring Platforms
Sources
guardrails.openai.com shapes more of what AI says about OpenAI Guardrails than any other source, at 58% of its citations.
openai.github.io · aiml.qa · aisecurityandsafety.org · arxiv.org
The market map
LLM Output Monitoring Platforms →Excerpts where OpenAI Guardrails appeared in the AI's answer

OpenAI Guardrails provides configurable input and output checks, including hallucination detection for retrieval-backed applications and custom validation rules.
Excerpts where OpenAI Guardrails appeared in the AI's answer

OpenAI Guardrails: Built-in hallucination detection and grounding checks for Responses/File Search workflows.
Excerpts where OpenAI Guardrails appeared in the AI's answer

OpenAI Guardrails now has explicit input/output PII controls: its input side includes “Mask PII Hybrid,” while output includes “Contains PII Hybrid,” which can block responses containing configured PII types.

OpenAI Guardrails — provides input PII masking and output PII detection as guardrails
Excerpts where OpenAI Guardrails appeared in the AI's answer

OpenAI Guardrails — provides jailbreak/prompt-injection detection plus PII masking and output checks.