Claude Opus 4.6

Anthropic

The previous Opus generation for coding and professional work, built to power agents that take on whole categories of real-world work. Opus 4.6 excels across the entire SDLC, breaking through on hard problems, identifying complex bugs, and demonstrating deeper codebase understanding. It also delivers a step-change in knowledge work, with near-production-ready documents, presentations, and spreadsheets on the first pass. With 1M context window and 128K max output, this was the ultimate problem-solver before being superseded by Opus 4.7.

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Capabilities

Thinking

Tool Use

Image Input

PDF Input

Technical Specifications

Context Window

1,000,000 tokens

Max Output

128,000 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

Superseded by Opus 4.7 with stronger agentic coding, adaptive-only thinking, and high-resolution vision

Recommended Replacement

Claude Opus 4.7