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Claude 4 Sonnet

NanoGPT

Claude 4 Sonnet by NanoGPT costs $2.99 per 1M input tokens and $14.99 per 1M output tokens, with a 200K-token context window.

Pricing

Input (per 1M tokens)
$2.99
Output (per 1M tokens)
$14.99
Cached input (per 1M)
—

Specifications

Provider
NanoGPT
Context window
200K tokens
Parameters
—
Released
Sep 2025
Open weights
No
Frontier model
No

Benchmarks

LiveBench
60.6
SWE-bench Multimodal
35.6
SWE-bench Verified
76.4

Compare Claude 4 Sonnet with…

Claude 4 Sonnet vs chatgpt-4o-latest$15.00/1MClaude 4 Sonnet vs Kimi K3$15.00/1MClaude 4 Sonnet vs GPT-5.4$15.00/1MClaude 4 Sonnet vs Claude Sonnet 4$15.00/1MClaude 4 Sonnet vs Claude Sonnet 4.5$15.00/1MClaude 4 Sonnet vs Claude Sonnet 4.6$15.00/1M

FAQ

How much does Claude 4 Sonnet cost?

Claude 4 Sonnet is priced at $2.99 per 1M input tokens and $14.99 per 1M output tokens. Output tokens cost more than input.

What is Claude 4 Sonnet's context window?

Claude 4 Sonnet supports a context window of 200K tokens — the maximum prompt plus response length it can handle in a single request.

Is Claude 4 Sonnet open weight?

No — Claude 4 Sonnet is a closed/proprietary model accessed via API.

Data as of 2026-06-28. Source: models.dev (open). Pricing is per 1M tokens (USD); confirm with the provider before production use.