Agentifact assessment — independently scored, not sponsored. Last verified Mar 6, 2026.
OpenAI Moderation API
Free API from OpenAI that classifies text and images for harmful content including hate speech, harassment, violence, self-harm, and sexual content. Powered by the omni-moderation model (GPT-4o based). Available free to all OpenAI API users with no usage limits counted against monthly quotas. Integrates via a single API call for agent output filtering.
Viable option — review the tradeoffs
You need to filter harmful content from user inputs and agent outputs to prevent abuse, comply with policies, and avoid liability.
Excellent accuracy on clear violations (scores 0-1 calibrated for thresholding); misses subtle/mild cases; multilingual improvements but English-best; instant free responses.
You want costless, production-ready guardrails for autonomous agents without building custom moderation.
Zero cost, no rate limits against quotas; reliable binary flags + detailed category scores; occasional false negatives on edge cases like implied threats.
Misses Subtle or Contextual Harm
Does not flag mild/implied violations (e.g., 'Sometimes I just want to...') or malicious intent without explicit categories (e.g., scams); relies on predefined categories only.
Not a Legal Compliance Shield
Flags OpenAI policy violations, not your app's legal standards; false negatives mean harmful content can slip through—layer with human review for high-stakes use.
Trust Breakdown
What It Actually Does
OpenAI Moderation API checks text or images you send it and flags harmful content like hate speech, harassment, violence, self-harm, or sexual material. It's free for OpenAI API users with no limits on usage.[1][2]
Free API from OpenAI that classifies text and images for harmful content including hate speech, harassment, violence, self-harm, and sexual content. Powered by the omni-moderation model (GPT-4o based). Available free to all OpenAI API users with no usage limits counted against monthly quotas.
Integrates via a single API call for agent output filtering.
Fit Assessment
Best for
- ✓content-moderation
- ✓safety-check
Score Breakdown
Protocol Support
Capabilities
Governance
- permission-scoping
- rate-limiting