GPT-5.4 Pro is OpenAI's most advanced model, building on GPT-5.4's unified architecture with enhanced reasoning capabilities for complex, high-stakes tasks. It features a 1M+ token context window (922K input, 128K...
OpenAI: GPT-5.4 Pro — OpenAI. Context window 1,050,000 tokens. API pricing (per 1M tokens): Input $30, Output $180. License: Proprietary. GPQA Diamond 94.6%.
| Provider | OpenAI |
|---|---|
| API model ID | openai/gpt-5.4-pro |
| Tier | Frontier |
| Context window | 1,050,000 tokens |
| Max output | 128,000 tokens |
| License | Proprietary |
| API pricing (per 1M tokens) · Input | $30 |
| API pricing (per 1M tokens) · Output | $180 |
| GPQA Diamond | 94.6% |
LMArena (CC-BY 4.0, best reasoning setting) · GPQA Diamond: Epoch AI (CC-BY 4.0)
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