OpenAI's shift toward open models has hit a new landmark. You can now download two open-weight reasoning models, similar to its o-series, right now on the developer platform Hugging Face. Why does this matter? OpenAI hasn't actually launched an open model since GPT-2 five years ago, and it has long prioritized closed-source, proprietary models. But with Meta's continued focus on its open Llama models, open models from Chinese companies like DeepSeek, Alibaba, and pressure from the Trump administration to focus on open sourcing, the pressure's on to open up. OpenAI CEO Sam Altman went as far as to say earlier this year the company was "on the wrong side of history" on its open source approach. And if you're tinkering with these models and find them underpowered, you'll be able to connect them to OpenAI's more powerful closed models to complete tasks. Get a full rundown on the new models here: