GPT-5.4 nano
Small & localClosed weightsTextReasoning
GPT-5.4 mini/nano family model by OpenAI.
About the GPT-5.4 mini/nano family
Compact, cheap members of the GPT-5.4 generation — mini for balanced light work, nano for the fastest and cheapest calls.
All GPT-5.4 mini/nano modelsHow this one is configured
This configuration runs in reasoning mode (thinks step-by-step before answering).
Also runs at: medium · xhigh effort
Effort controls how long the model thinks before answering — higher effort usually means better answers on hard problems, at the cost of speed and money. Same model underneath, so they share this page.