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A side-by-side comparison of GPT-4o and OpenAI: GPT-5.4 Nano, using the lowest price and highest limits found across every provider that offers each model.
| GPT-4o | OpenAI: GPT-5.4 Nano | |
|---|---|---|
| Providers | 44 | 45 |
| Cheapest input ($/M) | $0 via UnoRouter | $0.0301 via QiHang AI |
| Cheapest output ($/M) | $0 via UnoRouter | $0.1805 via QiHang AI |
| Max context | 128K | 400K |
| Max output | 16.4K | 128K |
| Released | May 10, 2024 | Mar 11, 2026 |
| Open weights | No | No |
| Features | ToolsStructured outputFilesTemperature | ReasoningToolsStructured outputFiles |
| Input modalities | FileImageText | ImageText |
| Output modalities | Text | Text |