Anthropic / Model reference

Claude Opus 4.1

Name: Claude Opus 4.1
Author: Anthropic

Anthropic's exceptional model for specialized reasoning tasks

See the code

Model IDclaude-opus-4-1

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.

Claude Opus 4.1 parameters and constraints
Parameter	Accepted values
`max_tokens`	1 – 32000
`thinking_budget`	-1 – 32000
`output_schema`	Pydantic BaseModel
`tools`	List of tool definitions
`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="claude-opus-4-1",
    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.