GPT-5.4 Nano vs Grok 4.3

Price, context window & benchmark comparison

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GPT-5.4 Nano

OpenAI
$0.20 / $1.25
Input / Output · per 1M tokens
VS
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Grok 4.3

xAI
$1.25 / $2.50
Input / Output · per 1M tokens
Compare different models
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X
Verdict: GPT-5.4 Nano is 3.4× cheaper than Grok 4.3 on a typical 3:1 input/output mix. Grok 4.3 scores higher on the Artificial Analysis Intelligence Index (24.9 vs 20.7). Grok 4.3 has the larger context window (1M vs 400K).
GPT-5.4 NanoGrok 4.3
Input price / 1M$0.20$1.25
Output price / 1M$1.25$2.50
Blended price (3:1)$0.46$1.56
Cached input / 1M$0.02$0.20
Context window400K1M
Max output128K900K
Intelligence index20.724.9
Coding index56.142.2
Providers
Best provider uptime (30m)
Vision inputYesYes
ReasoningYesYes
Tool callingYesYes
Released2026-03-172026-04-30
Retirement

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FAQ

Which is cheaper, GPT-5.4 Nano or Grok 4.3?

GPT-5.4 Nano is 3.4× cheaper than Grok 4.3 on a typical 3:1 input/output mix.

GPT-5.4 Nano vs Grok 4.3: which has a bigger context window?

GPT-5.4 Nano: 400,000 tokens. Grok 4.3: 1,000,000 tokens.

How much would 1 million requests cost?

At 2,000 input + 500 output tokens per request: GPT-5.4 Nano ≈ $1,025, Grok 4.3 ≈ $3,750.

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