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Claude Opus 4.6

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Anthropic's Claude Opus 4.6, now a legacy model superseded by Claude Opus 5. Opus 4.6 targets coding, AI agents, and enterprise workflows, with adaptive thinking, a 1M token context window, and 128K token synchronous output.
Anthropic's Claude Opus 4.6, now a legacy model superseded by Claude Opus 5. Opus 4.6 targets coding, AI agents, and enterprise workflows, with adaptive thinking, a 1M token context window, and 128K token synchronous output.

Claude Opus 4.6 is an AI model from Anthropic, available on ZeroTwo. It costs $5.00 per million input tokens and $25.00 per million output tokens, has a 1,000,000-token context window, can return up to 128,000 output tokens, and has a knowledge cutoff of May 2025.

Price
$5.00 • $25.00
Input • Output

Anthropic's Claude Opus 4.6, now a legacy model superseded by Claude Opus 5. Opus 4.6 targets coding, AI agents, and enterprise workflows, with adaptive thinking, a 1M token context window, and 128K token synchronous output.

1,000,000 context window
128,000 max output tokens
May 2025 knowledge cutoff
Reasoning token support
Pricing
Pricing is based on the number of tokens used. For tool-specific models, like search and computer use, there's a fee per tool call. See details in the pricing page.
Text tokens
Per 1M tokens
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Batch API price
Input
$5.00
Cached input
Output
$25.00
Quick comparison
Input
Cached input
Output
Claude Opus 4.6
$5.00

Questions

How much does Claude Opus 4.6 cost?

Claude Opus 4.6 is priced at $5.00 per million input tokens and $25.00 per million output tokens. On ZeroTwo it is included in your plan's credits rather than billed per token.

What is Claude Opus 4.6's context window?

Claude Opus 4.6 accepts up to 1,000,000 tokens of context and can return up to 128,000 output tokens.

What is Claude Opus 4.6's knowledge cutoff date?

Claude Opus 4.6 has a training knowledge cutoff of May 2025. For anything later than that, use a model with web search enabled.

Can I use Claude Opus 4.6 for free?

You can try Claude Opus 4.6 on ZeroTwo's free plan, which includes a monthly credit allowance across every model in the catalogue. Heavier use moves to a paid plan rather than a per-token bill.