Claude Opus 4.1

Anthropic

The previous Opus generation delivering superior coding and agentic performance with 74.5% on SWE-bench Verified. Excellent for complex multi-step problems requiring rigor and precision.

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Capabilities

Thinking

Tool Use

Image Input

PDF Input

Technical Specifications

Context Window

200,000 tokens

Max Output

32,000 tokens

Pricing

Token Costs (per 1M tokens)

Cache Miss Input

$15

Non-Reasoning Output

$75

Cache Read Input

$1.50

Cache Write Input

$18.75

Tool Costs (per 1K calls)

Web Search

$10

Code Execution

$0.0694

Legacy

Made legacy on

Reason

Outdated model

Recommended Replacement

Claude Opus 4.6