This model is not part of the weekly automatic sync. The figures below were confirmed on 2026-08-13.
The largest GPT series model. Emotional Intelligence and Creative Writing Specialization
GPT-4.5 Preview — OpenAI. Context window 128,000 tokens. API pricing (per 1M tokens): Input $75, Output $150. License: Proprietary. LMArena 1,417. GPQA Diamond 68.7%.
| Provider | OpenAI |
|---|---|
| Tier | Frontier |
| Context window | 128,000 tokens |
| Max output | 16,384 tokens |
| License | Proprietary |
| API pricing (per 1M tokens) · Input | $75 |
| API pricing (per 1M tokens) · Output | $150 |
| LMArena | 1,417 (gpt-4.5-preview-2025-02-27) |
| GPQA Diamond | 68.7% |
LMArena (CC-BY 4.0, best reasoning setting, 2026-10-02) · GPQA Diamond: Epoch AI (CC-BY 4.0)
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