Claude Sonnet 4.6 vs GPT-5.4 Nano

Price, context window & benchmark comparison

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Claude Sonnet 4.6

Anthropic
$3.00 / $15.00
Input / Output · per 1M tokens
VS
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GPT-5.4 Nano

OpenAI
$0.20 / $1.25
Input / Output · per 1M tokens
Compare different models
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Verdict: GPT-5.4 Nano is 13.0× cheaper than Claude Sonnet 4.6 on a typical 3:1 input/output mix. Claude Sonnet 4.6 scores higher on the Artificial Analysis Intelligence Index (30.1 vs 20.7). Claude Sonnet 4.6 has the larger context window (1M vs 400K).
Claude Sonnet 4.6GPT-5.4 Nano
Input price / 1M$3.00$0.20
Output price / 1M$15.00$1.25
Blended price (3:1)$6.00$0.46
Cached input / 1M$0.30$0.02
Context window1M400K
Max output128K128K
Intelligence index30.120.7
Coding index6356.1
Providers
Best provider uptime (30m)
Vision inputYesYes
ReasoningYesYes
Tool callingYesYes
Released2026-02-172026-03-17
Retirement

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FAQ

Which is cheaper, Claude Sonnet 4.6 or GPT-5.4 Nano?

GPT-5.4 Nano is 13.0× cheaper than Claude Sonnet 4.6 on a typical 3:1 input/output mix.

Claude Sonnet 4.6 vs GPT-5.4 Nano: which has a bigger context window?

Claude Sonnet 4.6: 1,000,000 tokens. GPT-5.4 Nano: 400,000 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: Claude Sonnet 4.6 ≈ $13,500, GPT-5.4 Nano ≈ $1,025.

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