# Guardrails AI vs OpenAI Moderation API (slim)

> OpenAI Moderation API has a score of 71.6 (BB) against Guardrails AI's 49.8 (D). Both do guard moderation. The largest gap is security & auth, 48 points. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/guardrails-ai-vs-openai-moderation.md (~1,600 tokens) · this version ~380 tokens · JSON https://www.anchorterminal.com/compare/guardrails-ai-vs-openai-moderation.json · canonical https://www.anchorterminal.com/compare/guardrails-ai-vs-openai-moderation
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-04

OpenAI Moderation API has a score of 71.6 (BB) against Guardrails AI's 49.8 (D). Both do guard moderation. The largest gap is security & auth, 48 points.

- Guardrails AI: D 49.8, rank #366 of 452 · https://www.anchorterminal.com/tools/guardrails-ai.min.md
- OpenAI Moderation API: BB 71.6, rank #81 of 452 · https://www.anchorterminal.com/tools/openai-moderation.min.md
- Pick Guardrails AI for payments & pricing (+30). Pick OpenAI Moderation API for reliability (+7), schema & documentation (+33), agent ergonomics (+22), security & auth (+48), transparency & trust (+29).

| Category | Guardrails AI | OpenAI Moderation API |
| --- | --- | --- |
| Reliability (16%) | 58 | 65 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 59 | 92 |
| Agent ergonomics (13%) | 63 | 85 |
| Security & auth (14%) | 44 | 92 |
| Payments & pricing (10%) | 60 | 30 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 44 | 47 |
| Transparency & trust (7%) | 61 | 90 |