Speed of chatGPT and Custom GPTs

Please improve speed of chatGPT and GPTs.
Because mistral and even mixtral working much faster, please reuse this models to improve chatGPT speed. Same for voice. Mistral with Groq working very fast for voice conversations.
This 2 parts can be defenitely improved, because now using ChatGPT and GPTs is hard because of slow speed.
Please also pay attention for latest fast image generation approaches to improve image generation speed.