Claude 4.1 Opus Thinking (32K)

claude-opus Reasoning Tool Calling Attachments Structured Output

Flagship Claude model for deep reasoning, coding, and long-horizon agents

Providers 2

Released Aug 5, 2025

Input Modalities text, image, pdf

Output Modalities text

Tarsk Use coding

Available Providers (2)

Provider	Model ID	Input Cost	Output Cost	Context	Max Output	Docs
NanoGPT	`claude-opus-4-1-thinking:32000`	$15/MTok	$75/MTok	200K	32K
NanoGPT	`claude-opus-4-1-thinking:32768`	$15/MTok	$75/MTok	200K	32K

Reasoning

Tool Calling

Attachments

Open Weights

Structured Output