I tested the new ChatGPT-5.4 mini and nano models — and I didn’t expect them to be this powerful OpenAI’s new GPT-5.4 mini and nano models bring a faster, more thoughtful ChatGPT experience to free users than I expected. #free_users #n’t_expect #nano_models #powerful_OpenAI #thoughtful_ChatGPT #ChatGPT_experience #models_bring
