GPT-5.4 Nano vs Grok 4.3
Price, context window & benchmark comparison
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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 Nano | Grok 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 window | 400K | 1M |
| Max output | 128K | 900K |
| Intelligence index | 20.7 | 24.9 |
| Coding index | 56.1 | 42.2 |
| Providers | — | — |
| Best provider uptime (30m) | — | — |
| Vision input | Yes | Yes |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| Released | 2026-03-17 | 2026-04-30 |
| Retirement | — | — |
Cost calculator
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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