A GPT model generates the next response in a conversation from messages labeled system, user, or assistant. GPT-5.1 is a fast GPT-family model whose reasoning behavior can be turned off when speed matters. section 9.2.3 section 9.8
A practical GPT integration combines:
- A system message that sets the assistant’s behavior. section 9.2.3
- A user message containing the task, such as explaining Streamlit in ten words or fewer. section 9.2.3
- The OpenAI Python library and chat completions endpoint, which return a completion object containing the generated text. section 9.2.3
Generate a short explanation
Create messages for a helpful programming assistant, call the chat completions endpoint with model='gpt-5.1', then read completion.choices[0].message.content. The result can be: “Streamlit is a framework for building interactive web applications easily.”

















