That was never in question. ChatGPT is openAIs web frontend for several of their GPT-Models. The technology is just GPT and transformers, the open source alter

That was never in question. ChatGPT is openAIs web frontend for several of their GPT-Models. The technology is just GPT and transformers, the open source alternatives are just not as advanced as the GPT4 model yet. It might change with current trajectory, mainly because OpenAI keeps nerfing it.