A series of OpenAI reasoning models, including gpt-5, mini and nano and their successors, that take text and images. Penalty and temperature parameters are not supported.
Read more: Microsoft Learn
In the Ultra Transcenders books
Each book explains GPT-5 series in context, with comparison tables and the common traps.
Terms in this definition
- Model temperature
Sampling setting between 0 and 2 controlling how random the output is. Lower values yield focused, repeatable responses and higher ones more creative text; tune this or Top P, but not both.
Related terms
- Reasoning model
Kind of model, for instance the o-series or GPT-5 series, that produces hidden reasoning tokens before its answer. Temperature, top_p and penalty parameters are unsupported, and
max_completion_tokenssets output length. - Vision-enabled chat model
A chat model able to understand images included in the prompt, such as GPT-4o, GPT-4.1, the GPT-5 series and o-series models. An application layer cannot add this capability to a model that handles only text.