2,254 AI tools ranked by real ratings, reviews, and popularity — updated automatically as new reviews come in. No paid placement affects this ranking.
Open Pretrained Transformers (OPT) by Facebook is a suite of decoder-only pre-trained transformers. [Announcement](https://ai.facebook.com/blog/democratizing-access-to-large-scale-language-models-with-opt-175b/). [OPT-175B text generation](https://opt.alpa.ai/) hosted by Alpa.
Meta's family of open-weight, natively multimodal AI models (Llama 4 Scout and Maverick), free for most commercial use under Meta's community license.