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Claude Sonnet 5

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Anthropic's Claude Sonnet 5 targets coding and agentic workloads, with adaptive thinking, a 1M token context window, and 128K token synchronous output.
Anthropic's Claude Sonnet 5 targets coding and agentic workloads, with adaptive thinking, a 1M token context window, and 128K token synchronous output.

Claude Sonnet 5 is an AI model from Anthropic, available on ZeroTwo. It costs $2.00 per million input tokens and $10.00 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 January 2026.

Price
$2.00 • $10.00
Input • Output

Anthropic's Claude Sonnet 5 targets coding and agentic workloads, with adaptive thinking, a 1M token context window, and 128K token synchronous output.

1,000,000 context window
128,000 max output tokens
January 2026 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
$2.00
Cached input
Output
$10.00
Quick comparison
Input
Cached input
Output
Claude Sonnet 5
$2.00

Questions

How much does Claude Sonnet 5 cost?

Claude Sonnet 5 is priced at $2.00 per million input tokens and $10.00 per million output tokens. On ZeroTwo it is included in your plan's credits rather than billed per token.

What is Claude Sonnet 5's context window?

Claude Sonnet 5 accepts up to 1,000,000 tokens of context and can return up to 128,000 output tokens.

What is Claude Sonnet 5's knowledge cutoff date?

Claude Sonnet 5 has a training knowledge cutoff of January 2026. For anything later than that, use a model with web search enabled.

Can I use Claude Sonnet 5 for free?

You can try Claude Sonnet 5 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.