Best NSFW Detection APIs Compared: 2026 Guide

Choosing the right NSFW detection API can save your platform from legal liability, app store removal, and advertiser pullbacks. Here's how the top image moderation APIs compare. Quick Comparison API Categories Free Tier Paid From Setup AI Engine NSFW Detect 10 (hierarchical) 30 req/mo $12.99/mo RapidAPI key Amazon Rekognition 7 top-level 5K/mo (12 mo) $0.001/image AWS + IAM Google Vision 5 (SafeSearch) 1K/mo $1.50/1K GCP + billing Azure Content Safety 4 severity levels 5K/mo $1.00/1K Azure subscription Clarifai 5 concepts 1K/mo $1.20/1K API key AI Engine NSFW Detect — Python Example import requests url = " https://nsfw-detect3.p.rapidapi.com/nsfw-detect " headers = { " x-rapidapi-host " : " nsfw-detect3.p.rapidapi.com " , " x-rapidapi-key " : " YOUR_API_KEY " , " Content-Type " : " application/x-www-form-urlencoded " , } response = requests . post ( url , headers = headers , data = { " url " : " https://example.com/photo.jpg " }) result = response . json () for label in result [ " body