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AI Model DirectorySearch models, providers, and docs
A side-by-side comparison of Claude Opus 5.5 and GPT-4o, using the lowest price and highest limits found across every provider that offers each model.
| Claude Opus 5.5 | GPT-4o | |
|---|---|---|
| Providers | 57 | 44 |
| Cheapest input ($/M) | $0.6196 via DaoXE | $0 via UnoRouter |
| Cheapest output ($/M) | $1.5 via KiosAPI | $0 via UnoRouter |
| Max context | 1M | 128K |
| Max output | 1M | 16.4K |
| Released | Sep 18, 2026 | May 10, 2024 |
| Open weights | No | No |
| Features | ReasoningToolsStructured outputFiles | ToolsStructured outputFilesTemperature |
| Input modalities | FileImageText | FileImageText |
| Output modalities | Text | Text |