Claude Opus 4.6
The flagship of the Claude 4 generation. 1M-token context is GA, and Opus 4.6 leads on agentic coding, long-horizon reasoning and tool-use reliability.
Claude Opus 4.6 is a frontier AI model from Anthropic. It costs $5.000 per million input tokens and $25.000 per million output tokens (blended $11.000/M), with a 1,000,000-token context window.
- Agentic coding (Claude Code)
- 1M-token context, GA
- Tool use & function calling
- Multi-step reasoning
- Faithful to long instructions
- Engineering copilots
- Codebase-wide refactors
- Long-document Q&A
- Multi-step agent workflows
Benchmarks
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See all 18 →Frequently asked questions
How much does Claude Opus 4.6 cost?
Claude Opus 4.6 costs $5.000 per million input tokens and $25.000 per million output tokens, for a blended reference rate of $11.000 per million tokens.
What is Claude Opus 4.6's context window?
Claude Opus 4.6 supports up to 1,000,000 tokens of context in a single request.
What is Claude Opus 4.6 best for?
Claude Opus 4.6 is well suited to Agentic coding (Claude Code), 1M-token context, GA and Tool use & function calling.
Who makes Claude Opus 4.6?
Claude Opus 4.6 is developed and served by Anthropic. It was released in Nov 2025.