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A side-by-side comparison of GPT-5.4 and GPT-6.1 Terra, using the lowest price and highest limits found across every provider that offers each model.
| GPT-5.4 | GPT-6.1 Terra | |
|---|---|---|
| Providers | 55 | 40 |
| Cheapest input ($/M) | $0.376 via QiHang AI | $0.2 via NaraRouter |
| Cheapest output ($/M) | $2.2559 via QiHang AI | $1.0002 via NaraRouter |
| Max context | 1.1M | 1.1M |
| Max output | 131.1K | 128K |
| Released | Feb 26, 2026 | Sep 27, 2026 |
| Open weights | No | Yes |
| Features | ReasoningToolsStructured outputFilesTemperature | ReasoningToolsStructured outputFiles |
| Input modalities | ImageText | ImageText |
| Output modalities | Text | Text |