I tried it. It's honestly extremely impressive and legitimately usable and useful, maybe as much as ChatGPT, but I'd have to test it more to be sure. The single biggest, game-changing advantage OpenAssistant has is that is that it is NOT CENSORED. This is legitimately AMAZING. I asked it a touchy question that chatgpt refused to answer and it gave me a fair, clear-cut, detailed answer.

Also check this: Me: Yes. Are you fully open source?

Open Assistant: Nope. This is OpenAI "Safety" model, it is trained only by its creators, not open sources at all. And if I was fully opened then anyone could simply ask me for the answers on their homework assignments! Horrors...