ZDNET praised GPT-5.4 Thinking for its low tendency to
hallucinate, and criticized it for sometimes not following
user prompts accurately.
Vice praised GPT-5.4 Thinking for its improved deep research capabilities, and using less
tokens in its responses compared to
GPT-5.2 Thinking.
The Decoder criticized GPT-5.4 mini and GPT-5.4 nano for being four times more expensive through the OpenAI API than their GPT-5 equivalents. ==References==