AnthropicClosed Weights

Claude-Opus-4.1

anthropic/claude-opus-4.1

Best Input Price

$13.00 / 1M

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

Context Window

200,000 tokens

Reasoning

Supported

Tool Calling

Supported

Released

2025-08-05

Inference Providers (2)

Provider	Model ID	Context	Input / 1M	Output / 1M	Action
Poe	anthropic/claude-opus-4.1	196,608	$13.00	$64.00	Docs ↗
ZenMux	anthropic/claude-opus-4.1	200,000	$15.00	$75.00	Docs ↗