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A side-by-side comparison of OpenAI: GPT-5.3-Codex and Grok 4.6, using the lowest price and highest limits found across every provider that offers each model.
| OpenAI: GPT-5.3-Codex | Grok 4.6 | |
|---|---|---|
| Providers | 41 | 50 |
| Cheapest input ($/M) | $0.1504 via QiHang AI | $0.1 via UnoRouter |
| Cheapest output ($/M) | $1.2031 via QiHang AI | $0.3 via UnoRouter |
| Max context | 512K | 2M |
| Max output | 128K | 524.3K |
| Released | Feb 5, 2026 | Aug 6, 2026 |
| Open weights | No | No |
| Features | ReasoningToolsStructured outputFiles | ReasoningToolsStructured outputFilesTemperature |
| Input modalities | ImageText | ImageText |
| Output modalities | Text | Text |