Model router
Version: 2025-08-07
Welcome to the
2025-08-07 version of model router that supports gpt-5 models in addition to the previously supported gpt-4 and o4-mini models.
Model Router dynamically selects the optimal large language model (LLM) for a specific query or task in real time. By evaluating factors like query complexity, cost, and performance, it efficiently routes requests to the most suitable model, ensuring high quality results while minimizing costs. Context length for model router is dependent on the underlying model that's being used for each prompt.
For more information, reference the Model router documentation
Model version in the router
| Router Version | Model | Model version | Availability | Lifecycle |
|---|---|---|---|---|
| 2025-08-07 | gpt-5* | 2025-08-07 | Global standard | General available |
| gpt-5-mini | 2025-08-07 | Global standard | General available | |
| gpt-5-nano | 2025-08-07 | Global standard | General available | |
| gpt-5-chat | 2025-08-07 | Global standard | Preview | |
| gpt-4.1 | 2025-04-14 | Global standard | General available | |
| gpt-4.1-mini | 2025-04-14 | Global standard | General available | |
| gpt-4.1-nano | 2025-04-14 | Global standard | General available | |
| o4-mini | 2025-04-16 | Global standard | General available |
- Requires registration. Please refer to the particular model documentation for the latest information.
Model Specifications
Context Length1048576
LicenseCustom
Training DataAugust 2025
Last UpdatedAugust 2025
Input TypeText,Image
Output TypeText
PublisherMicrosoft
Languages1 Language