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A side-by-side comparison of Claude Sonnet 4.5 and Step 5 Preview, using the lowest price and highest limits found across every provider that offers each model.
| Claude Sonnet 4.5 | Step 5 Preview | |
|---|---|---|
| Providers | 34 | 32 |
| Cheapest input ($/M) | $0.4647 via DaoXE | $0 via KiosAPI |
| Cheapest output ($/M) | $2.3236 via DaoXE | $0 via KiosAPI |
| Max context | 1M | 1M |
| Max output | 64K | 1M |
| Released | Sep 26, 2025 | Sep 15, 2026 |
| Open weights | No | Yes |
| Features | ReasoningToolsStructured outputFilesTemperature | ReasoningToolsStructured outputFilesTemperature |
| Input modalities | FileImageText | ImageTextVideo |
| Output modalities | Text | Text |