GPT-5.4 vs GPT-5.5 Pro
GPT-5.4 is about 12.0× cheaper than GPT-5.5 Pro on blended token cost ($5.63 vs $67.50 per 1M).
| Spec | GPT-5.4 | GPT-5.5 Pro |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Status | GA | GA |
| Input $/1M | $2.50 ◎ | $30 |
| Output $/1M | $15 ◎ | $180 |
| Blended $/1M | $5.63 ◎ | $67.50 |
| Context | 1.1M | 1.1M |
| Max output | 128K | 128K |
| Cutoff | 2025-08-31 | 2025-12-01 |
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