Merge pull request #5137 from mrbullwinkle/mrb_05_22_2025_fine-tuning

[Azure OpenAI] Cloned PM PR to address acrolinx issues

Author: prmerger-automator[bot]

articles/ai-services/openai/concepts/model-retirements.md

@@ -87,15 +87,15 @@ For more information on how to manage model upgrades and migrations for provisio
 > [!NOTE]
 > Not all models go through a deprecation period prior to retirement. Some models/versions only have a retirement date.
 >
-> **Fine-tuned models** are subject to the same deprecation and retirement schedule as their equivalent base model.
+> **Fine-tuned models** are subject to a [different](#fine-tuned-models) deprecation and retirement schedule from their equivalent base model.
 
 These models are currently available for use in Azure OpenAI.
 
 | Model                     | Version         | Retirement date                    | Replacement model                    |
 | --------------------------|-----------------|------------------------------------|--------------------------------------|
 | `computer-use-preview`    | 2025-03-11      | No earlier than June 11, 2025      |                                      |
 | `dall-e-3`                | 3               | No earlier than June 30, 2025      |                                      |
-| `gpt-35-turbo-16k`        | 0613            | April, 30, 2025                    | `gpt-4.1-mini` version: `2025-04-14` |
+| `gpt-35-turbo-16k`        | 0613            | April  30, 2025                    | `gpt-4.1-mini` version: `2025-04-14` |
 | `gpt-35-turbo`            | 1106            | No earlier than July 16, 2025      | `gpt-4.1-mini` version: `2025-04-14` |
 | `gpt-35-turbo`            | 0125            | No earlier than July 16, 2025      | `gpt-4.1-mini` version: `2025-04-14` |
 | `gpt-4`<br>`gpt-4-32k`    | 0314            | June 6, 2025                       | `gpt-4o` version: `2024-11-20`       |
@@ -130,11 +130,30 @@ We'll notify all customers with these preview deployments at least 30 days befor
 > [!TIP]
 > **Will a model upgrade happen if the new model version is not yet available in that region?**
 >
-> Yes, even in cases where the latest model version is not yet available in a region, we will automatically upgrade deployments during the scheduled upgrade window. For more information, see [Azure OpenAI model versions](/azure/ai-services/openai/concepts/model-versions#will-a-model-upgrade-happen-if-the-new-model-version-is-not-yet-available-in-that-region).
+> Yes, even in cases where the latest model version is not yet available in a region, we'll automatically upgrade deployments during the scheduled upgrade window. For more information, see [Azure OpenAI model versions](/azure/ai-services/openai/concepts/model-versions#will-a-model-upgrade-happen-if-the-new-model-version-is-not-yet-available-in-that-region).
 
 > [!IMPORTANT]
 > Vision enhancements preview features including Optical Character Recognition (OCR), object grounding, video prompts will be retired and no longer available once `gpt-4` Version: `vision-preview` is upgraded to `turbo-2024-04-09`. If you're currently relying on any of these preview features, this automatic model upgrade will be a breaking change.
 
+## Fine-tuned models
+
+Fine-tuned models retire in two phases: training and deployment.
+
+All fine-tuned models follow their equivalent base model for **training** retirement. Once retired, a given model is no longer available for fine tuning.
+
+For fine-tuned models made generally available since `gpt-4o-2024-08-06`, **deployment** retirement occurs 1 year after **training** retirement. At deployment retirement, inference and deployment returns error responses.
+
+| Model            | Version     | Training retirement date  | Deployment retirement date       |
+| -----------------|-------------|---------------------------|----------------------------------|
+| `gpt-35-turbo`   | 1106        | At base model retirement  | At training retirement           |
+| `gpt-35-turbo`   | 0125        | At base model retirement  | At training retirement           |
+| `gpt-4o`         | 2024-08-06  | At base model retirement  | One year after training retirement |
+| `gpt-4o-mini`    | 2024-07-18  | At base model retirement  | One year after training retirement |
+| `gpt-4.1`        | 2025-04-14  | At base model retirement  | One year after training retirement |
+| `gpt-4.1-mini`   | 2025-04-14  | At base model retirement  | One year after training retirement |
+| `gpt-4.1-nano`   | 2025-04-14  | At base model retirement  | One year after training retirement |
+| `o4-mini`        | 2025-04-16  | At base model retirement  | One year after training retirement |
+
 ## Default model versions
 
 | Model | Current default version | New default version | Default upgrade date |