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AnthropicCurrent

Claude Opus 4.5

Legacy high-intelligence model

Context Window

200K tokens

≈ 150K words

Input Price

$5

per 1M tokens

Output Price

$25

per 1M tokens

Released

November 2025

Capabilities

Vision / Image inputTool / Function calling

Best for

Most capable tasks — complex reasoning, research, and long-form writing

Strengths

  • Deep reasoning
  • Agentic tasks
  • Research
  • Long-form writing
  • Complex tasks

API identifier

claude-opus-4-5-20251101

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