anthropic

Claude Opus 4.1

anthropic/claude-opus-4.1

Ratings & Rankings

Input Cost

$15.0000

4/100

Output Cost

$75.0000

3/100

Context Window

200K

45/100

Overall

17/100

Key Specifications

Context Window200K

Max Output32K

TokenizerClaude

Input Modalitiesimage, text, file

Output Modalitiestext

Pricing

Input (per M tokens)$15.0000per million tokens

Output (per M tokens)$75.0000per million tokens

Input & Output

You send

imagetextfile

You get

text

Capabilities

✓Function calling

✓Structured outputs

✓Unmoderated

About

Claude Opus 4.1 is an updated version of Anthropicâs flagship model, offering improved performance in coding, reasoning, and agentic tasks. It achieves 74.5% on SWE-bench Verified and shows notable gains...

Supported parameters

include_reasoningmax_tokensreasoningresponse_formatstopstructured_outputstemperaturetool_choicetoolstop_ktop_p