I tested the new ChatGPT-5.4 mini and nano models

OpenAI’s new GPT-5.4 mini and nano models bring a faster, more thoughtful ChatGPT experience to free users than I expected.
Decrypt

OpenAI Releases GPT-5.4 Mini and Nano, Which Could Be More Useful Than the Big Model

OpenAI's new small models are faster and cheaper than GPT-5.4—exactly what developers and businesses actually need.

OpenAI unveils small models GPT‑5.4 mini and nano

OpenAI (OPENAI) has launched GPT‑5.4 mini and nano, its most capable small models yet, according to the ChatGPT maker.
9to5Google

ChatGPT’s free tier gets GPT 5.4 mini model with improved coding capabilities

OpenAI just launched GPT 5.4 mini and nano models which are now live in the API, Codex, and ChatGPT with improved coding capabilities.

OpenAI releases GPT-5.4 mini and nano, its ‘most capable small models yet’

OpenAI continues to ship new models with the release of GPT-5.4 mini and nano, its “most capable small models yet.” ChatGPT users can start using GPT-5.4 mini today. These flavors of GPT-5.4 are ...