This appears to be a web frontend with authentication for Azure's OpenAI API, which is a great choice if you can't use Chat GPT or its API at work. If you're looking to try the "open" models like Llama 2 (or it's uncensored version Llama 2 Uncensored), check out https://github.com/jmorganca/ollama or some of the lower level runners like llama.cpp (which powers the aforementioned project I'm working on) or Candle, the…
That has been my experience. Having experimented with both (informally), Llama 2 is similar to GPT-3.5 for a lot of general comprehension questions.
GPT-4 is still the best amongst the closed-source, cutting edge models in terms of general conversation/reasoning, although 2 things:
1. The guardrails that OpenAI has placed on ChatGPT are too aggressive! They clamped down on it quite hard to the extent that it gets in the way of a reasonable query far too often.
2. I've gotten pretty good results with smaller models trained on specific datasets. GPT-4 is still on top in terms of general purpose conversation, but for specific tasks, you don't necessarily need it. I'd also add that for a lot of use cases, context size matters more.