Could this be why people recently say they see more weird results in ChatGPT? Maybe OpenAI is trying out different quantization methods for the GPT4 model(s) to reduce resource usage of ChatGPT.
I'd be more inclined to believe that they're dropping down to gpt-3.5-turbo based on some heuristic, and that's why sometimes it gives you "dumber" responses. If you can serve 5/10 requests with 3.5 by swapping only the "easy" messages out, you've just cut your costs by nearly half (3.5 is like 5% of the cost of 4).
Serving me ChatGPT 3.5 when I explicitly requesting ChatGPT 4 sounds like a very bad move? They're not marketing it like "ChatGPT Basic" and "ChatGPT Pro".
