OpenAI / Model reference

GPT-5 Nano

Name: GPT-5 Nano
Author: OpenAI

OpenAI model available through the Celeste SDK. Explore its supported operations and parameters.

See the code

Model IDgpt-5-nano

What it can do.

Streaming

celeste.text.generateGenerate text

celeste.images.analyzeUnderstand media

Parameters.

Supported controls from Celeste’s model registry. Values and availability differ between models.

GPT-5 Nano parameters and constraints
Parameter	Accepted values
`max_tokens`	1 – 128000
`thinking_budget`	`minimallowmediumhigh`
`tools`	List of tool definitions
`output_schema`	Pydantic BaseModel
`image`	Image artifacts

Start with a few lines

Put it to work.

Use your provider credentials. Call the model through the SDK and build around its output.

import celeste
response = await celeste.text.generate(
    model="gpt-5-nano",
    prompt="Write a project brief for a neighborhood repair café."
)
print(response.content)

This example uses text.generate. Explore the quickstart for installation and authentication.