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Claude Sonnet 4.6 Thinking

NanoGPT

Claude Sonnet 4.6 Thinking by NanoGPT costs $3.00 per 1M input tokens and $15.00 per 1M output tokens, with a 1M-token context window.

Pricing

Input (per 1M tokens)
$3.00
Output (per 1M tokens)
$15.00
Cached input (per 1M)
$0.30

Specifications

Provider
NanoGPT
Context window
1M tokens
Parameters
—
Released
Feb 2026
Open weights
No
Frontier model
No

Benchmarks

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FAQ

How much does Claude Sonnet 4.6 Thinking cost?

Claude Sonnet 4.6 Thinking is priced at $3.00 per 1M input tokens and $15.00 per 1M output tokens. Output tokens cost more than input.

What is Claude Sonnet 4.6 Thinking's context window?

Claude Sonnet 4.6 Thinking supports a context window of 1M tokens — the maximum prompt plus response length it can handle in a single request.

Is Claude Sonnet 4.6 Thinking open weight?

No — Claude Sonnet 4.6 Thinking is a closed/proprietary model accessed via API.

Data as of 2026-10-15. Source: models.dev (open). Pricing is per 1M tokens (USD); confirm with the provider before production use.