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+# Updates to Admin APIs, Real-time Sessions, and Fine-tuning Request Payloads
+
+1. **New admin API key endpoints**: You can now manage admin-level keys with “GET,” “POST,” “GET by ID,” and “DELETE” calls at `/organization/admin_api_keys`. This makes it easier to create, review, and delete high-permission keys without mixing them up with normal API keys.
+2. **New realtime sessions endpoint**: There is now a “POST /realtime/sessions” method for ephemeral token creation. This lets you quickly generate short-lived client tokens to power more dynamic, real-time applications.
+Example Payload:
+```json
+{
+    "model": "gpt-4o-realtime-preview-2024-12-17",
+    "modalities": ["audio", "text"],
+    "instructions": "You are a helpful assistant.",
+    "voice": "alloy",
+    "input_audio_format": "pcm16",
+    "output_audio_format": "pcm16",
+    "input_audio_transcription": {
+        "model": "whisper-1"
+    },
+    "turn_detection": null,
+    "tools": [],
+    "tool_choice": "auto",
+    "temperature": 0.8,
+    "max_response_output_tokens": "inf"
+}
+```
+
+3. **Fine-tuning job creation changed**: the request now requires you to nest fields under “method” with “type” and “hyperparameters” inside. The [finetuning UI](https://platform.openai.com/finetune) remains unchanged
+```json
+{
+    "training_file": "file-abc123",
+    "model": "gpt-4o-mini",
+    "method": {
+        "type": "supervised",
+        "supervised": {
+            "hyperparameters": {
+                "n_epochs": 2
+            }
+        }
+    }
+}
+```
+
+![Fine-tuning Dashboard](images/finetuning-dashboard.png)
+Access fine-tuning UI at https://platform.openai.com/finetune
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+# OpenAI Fine-tuning Guide
+## Overview
+Fine-tuning allows you to customize OpenAI's models for specific use cases by training them on your own data([1](https://platform.openai.com/docs/guides/fine-tuning)). This is particularly useful for:
+- Setting specific style, tone, or format
+- Improving reliability for desired outputs
+- Handling complex prompts and edge cases
+- Teaching new skills or tasks
+## Currently Available Models
+- `gpt-4o-mini` (recommended for most users)
+- `gpt-3.5-turbo`
+- `babbage-002`
+- `davinci-002`
+Note: GPT-4 fine-tuning is currently in experimental access([1](https://platform.openai.com/docs/guides/fine-tuning)).
+## Step-by-Step Guide
+### 1. Prepare Your Dataset
+Create a JSONL file with your training examples. Each example should be a conversation in this format:
+```jsonl
+{"messages": [
+    {"role": "system", "content": "System message here"},
+    {"role": "user", "content": "User message here"},
+    {"role": "assistant", "content": "Assistant response here"}
+]}
+```
+Best practices:
+- Include at least 10 examples
+- Make examples diverse and representative
+- Target specific cases where the base model isn't performing as desired
+- Include ideal responses in the assistant messages
+### 2. Validate and Upload Your Data
+```python
+from openai import OpenAI
+client = OpenAI()
+# Upload the training file
+file = client.files.create(
+    file=open("training_data.jsonl", "rb"),
+    purpose="fine-tune"
+)
+```
+### 3. Create Fine-tuning Job
+Based on the recent changelog, use this updated format:
+```python
+client.fine_tuning.jobs.create(
+    training_file="file-abc123",
+    model="gpt-3.5-turbo",
+    method={
+        "type": "supervised",
+        "supervised": {
+            "hyperparameters": {
+                "n_epochs": 2
+            }
+        }
+    }
+)
+```
+### 4. Configure Hyperparameters (Optional)
+Key hyperparameters to consider:
+- `n_epochs`: Increase by 1-2 if model isn't following training data enough
+- Decrease epochs if model becomes less diverse than desired
+- Adjust learning rate if model isn't converging
+### 5. Monitor Training Progress
+```python
+# Get the status of your fine-tuning job
+job = client.fine_tuning.jobs.retrieve("job-id")
+print(job.status)
+```
+## Cost Considerations
+- Fine-tuning costs vary based on model and data size
+- Training tokens and usage tokens have different pricing
+- Consider testing with a smaller dataset first
+## Best Practices
+1. **Start Simple**: Begin with base model prompt engineering before fine-tuning
+2. **Quality Data**: Ensure training data is high-quality and well-formatted
+3. **Test Thoroughly**: Compare fine-tuned model against base model using test cases
+4. **Iterate**: Monitor performance and adjust hyperparameters as needed
+## Rate Limits
+- Fine-tuned models share rate limits with their base models
+- For example, if you use 50% of `gpt-3.5-turbo`'s TPM limit, your fine-tuned version will only have the remaining 50% available
+## Evaluation
+To evaluate your fine-tuned model:
+1. Generate samples from both base and fine-tuned models
+2. Compare responses side-by-side
+3. Consider using OpenAI's evals framework for comprehensive testing
+Remember that fine-tuning can be complementary to retrieval strategies - they're not mutually exclusive approaches to improving model performance.
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