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A side-by-side comparison of OpenAI: GPT-5.4 Nano and GPT-6 Astra, using the lowest price and highest limits found across every provider that offers each model.
| OpenAI: GPT-5.4 Nano | GPT-6 Astra | |
|---|---|---|
| Providers | 45 | 58 |
| Cheapest input ($/M) | $0.0301 via QiHang AI | $1 via Api.Airforce |
| Cheapest output ($/M) | $0.1805 via QiHang AI | $2.25 via KiosAPI |
| Max context | 400K | 1.1M |
| Max output | 128K | 128K |
| Released | Mar 11, 2026 | Aug 27, 2026 |
| Open weights | No | No |
| Features | ReasoningToolsStructured outputFiles | ReasoningToolsStructured outputFiles |
| Input modalities | ImageText | FileImageText |
| Output modalities | Text | Text |