OpenAI just released its first ever open-source1 large language models, called gpt-oss-120b and gpt-oss-20b. You can talk to them here. Are they good models? Well, that depends on what you’re looking for. They’re great at some benchmarks, of course (OpenAI would never have released them otherwise) but weirdly bad at others, like SimpleQA. Some people really like them. Others on Twitter really don’t. From what I can tell, they’re technically competent but lack a lot of out-of-domain knowledge: fo...