---
upgrade:
  - |
    The default OpenAI model has been changed from `gpt-4o-mini` to `gpt-5-mini` for `OpenAIChatGenerator` and `OpenAIGenerator`. If you rely on the default model and need to continue using `gpt-4o-mini`, explicitly specify it when initializing these components: `OpenAIChatGenerator(model="gpt-4o-mini")`.
enhancements:
  - |
    The default OpenAI model for `OpenAIChatGenerator` and `OpenAIGenerator` has been updated from `gpt-4o-mini` to `gpt-5-mini`.
