···35353636## Classification
37373838+* [Content Safety API by Google](https://protectingchildren.google/tools-for-partners/#learn-about-our-tools)
3939+ * uses machine learning to detect novel CSAM, nudity, and sexually explicit content in images and videos
4040+ * free service, but requires registration
4141+ * not open source itself, but can be [used via Coop](https://roostorg.github.io/coop/SIGNALS.html#content-safety-api-by-google), which is open source
3842* [CoPE by Zentropi](https://huggingface.co/zentropi-ai/cope-a-9b)
3943 * small language model trained for accurate, fast, steerable content classification based on developer-defined content policies
4044* [Detoxify by Unitary AI](https://github.com/unitaryai/detoxify)