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A side-by-side comparison of Claude Sonnet 5 and OpenAI: GPT-5.4 Pro, using the lowest price and highest limits found across every provider that offers each model.
| Claude Sonnet 5 | OpenAI: GPT-5.4 Pro | |
|---|---|---|
| Providers | 56 | 33 |
| Cheapest input ($/M) | $0.3098 via DaoXE | $4.6472 via DaoXE |
| Cheapest output ($/M) | $1.5 via KiosAPI | $27.8829 via DaoXE |
| Max context | 1M | 1.1M |
| Max output | 1M | 128K |
| Released | Jun 29, 2026 | Mar 1, 2026 |
| Open weights | No | No |
| Features | ReasoningToolsStructured outputFiles | ReasoningToolsStructured outputFiles |
| Input modalities | ImageText | FileImageText |
| Output modalities | Text | Text |