Content moderation API
30 AI models that check text, images or video for unsafe content, with the lowest price for each and who serves it.
Checks
Providers
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 Nemotron 3.5 Content SafetyNVIDIAOpen weights · permissiveReasoning+1 | $0.20/1Mvia OpenRouter | 131K | Free/1M | 250 | May 22 | |
 fal NSFW Filterfal | $0.001/imgvia Fal | — | — | — | — | |
 Falconsai NSFW Image DetectionFalconsai | $0.000225/GPU-secvia Replicate | — | — | — | — | |
| lFlux Content Filterlucataco | $0.000975/GPU-secvia Replicate | — | — | — | — | |
| GPT OSS Safeguard 120BOpenAIApache 2.0JSON+2 | $0.60/1Mvia Amazon Bedrock | 128K | $0.15/1M | — | Sep 18, 2025 | |
| GPT OSS Safeguard 20BOpenAIApache 2.0Reasoning | $0.20/1Mvia Amazon Bedrock | 131K | $0.07/1M | — | Sep 18, 2025 | |
| Llama 3.1 Nemoguard 8B Content SafetyNVIDIAOpen weights | Free/1Mvia Nvidia | — | Free/1M | — | Jan 15, 2025 | |
| Llama 3.1 Nemoguard 8B Topic ControlNVIDIAOpen weights | Free/1Mvia Nvidia | — | Free/1M | — | Jan 15, 2025 | |
| Llama 3.1 Nemotron Safety Guard 8B V3NVIDIAOpen weights · with terms | Free/1Mvia Nvidia | — | Free/1M | — | Aug 20, 2025 | |
 Llama Guard 2 8BMeta | $0.26/1Mvia AI/ML API | — | $0.26/1M | — | — | |
| Llama Guard 3 8BMetaLlama 3.1 | $0.03/1Mvia Cloudflare Workers AI | — | $0.484/1M | — | Jul 22, 2024 | |
| Llama Guard 4 12BMetaOpen weights · with termsVision | $0.18/1Mvia Deep Infra | 164K | $0.18/1M | — | Apr 23, 2025 | |
| Llama Prompt Guard 2 22MMetaOpen weights · with terms | $0.01/1Mvia Helicone | — | $0.01/1M | — | Apr 28, 2025 | |
 Mistral Moderation 2603Mistral | Free/1Mvia Mistral | 131K | Free/1M | — | — | |
| Molmo2 Content Moderator (Image)WaveSpeed | $0.003/runvia WaveSpeedAI | — | — | — | — | |
| Molmo2 Content Moderator (Text)WaveSpeed | $0.003/runvia WaveSpeedAI | — | — | — | — | |
| Molmo2 Content Moderator (Video)WaveSpeed | $0.003/runvia WaveSpeedAI | — | — | — | — | |
| Nemotron-Content-Safety-3.5NVIDIA | $0.20/1Mvia Deep Infra | — | $0.20/1M | — | — | |
| XNSFW Checker (X-AILab)X-AILab | $0.001/imgvia Fal | — | — | — | — | |
| lNSFW Filter Customlittletry | $0.000225/GPU-secvia Replicate | — | — | — | — | |
| OpenAI omni-moderationOpenAI | $0.16/1Mvia APIMart | — | Free/1M | — | — | |
| OpenAI text-moderation (legacy)OpenAI | $0.16/1Mvia APIMart | — | $0.16/1M | — | — | |
 OrcaVerify Text 1.0orcarouter | Free/1Mvia OrcaRouter | — | $2/1M | — | — | |
| Privacy FilterOpenAIApache 2.0 | Free/1Mvia NEAR AI Cloud | 1K | $0.01/1M | — | Apr 17 | |
| fPrompt Classifierfofr | $0.000975/GPU-secvia Replicate | — | — | — | — | |
| Prompt Guard 2 86MMetaOpen weights · with terms | $0.01/1Mvia Helicone | — | $0.01/1M | — | Apr 28, 2025 | |
 Qwen3Guard Gen 4BAlibaba | $0.000975/GPU-secvia Replicate | — | — | — | — | |
| CStable Diffusion Safety CheckerCompVis | $0.000225/GPU-secvia Replicate | — | — | — | — | |
| WaveSpeed Content Moderator (Image)WaveSpeed | $0.002/runvia WaveSpeedAI | — | — | — | — | |
| WaveSpeed Content Moderator (Text)WaveSpeed | $0.001/runvia WaveSpeedAI | — | — | — | — |
Frequently asked questions
A service that checks text, images or video for harmful content such as violence, sexual content or hate, and returns labels or scores you can act on before anything reaches your users.
Yes. OpenAI’s and Mistral’s own moderation endpoints are free with an account, and open models such as Llama Guard can run on your own hardware.
Pick one that takes images: OpenAI’s omni-moderation reads text and images, and dedicated NSFW detectors are priced per image. For text only, guard models like Llama Guard are cheap and can be self-hosted.
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