Claude Opus 4.5

Anthropic

The previous Opus generation for the hardest problems. Opus 4.5 excels at extremely complex reasoning, advanced coding challenges, sophisticated research, and intricate multi-step planning. With enhanced general intelligence and vision capabilities, this model tackles problems that push the boundaries of AI capability.

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Capabilities

Thinking

Tool Use

Image Input

PDF Input

Technical Specifications

Context Window

200,000 tokens

Max Output

64,000 tokens

Pricing

Token Costs (per 1M tokens)

Cache Miss Input

$5

Non-Reasoning Output

$25

Cache Read Input

$0.50

Cache Write Input

$6.25

Tool Costs (per 1K calls)

Web Search

$10

Code Execution

$0.0694

Legacy

Made legacy on

Reason

Outdated model

Recommended Replacement

Claude Opus 4.7