Cheaper and faster is also better. The cheapest version of GPT-4 costs $0.01/$0.03 per 1K input/output tokens [1]. Mistral AI is charging 0.14€/0.42€ per ONE MILLION input/output tokens for their 7B model [2]. It's night and day.
If people can start fine-tuning a 7B model to do the same work they were doing with GPT-4, they will 100% switch.
[1]: https://help.openai.com/en/articles/7127956-how-much-does-gp...