(docs) pricing base_model

docs/my-website/docs/proxy/configs.md

@@ -246,6 +246,28 @@ model_list:
 $ litellm --config /path/to/config.yaml
 ```
 
+
+## Set Azure `base_model` for cost tracking
+
+**Problem**: Azure returns `gpt-4` in the response when `azure/gpt-4-1106-preview` is used. This leads to inaccurate cost tracking
+
+**Solution** ✅ :  Set `base_model` on your config so litellm uses the correct model for calculating azure cost
+
+Example config with `base_model`
+```yaml
+model_list:
+  - model_name: azure-gpt-3.5
+    litellm_params:
+      model: azure/chatgpt-v-2
+      api_base: os.environ/AZURE_API_BASE
+      api_key: os.environ/AZURE_API_KEY
+      api_version: "2023-07-01-preview"
+    model_info:
+      base_model: azure/gpt-4-1106-preview
+```
+
+You can view your cost once you set up [Virtual keys](https://docs.litellm.ai/docs/proxy/virtual_keys) or [custom_callbacks](https://docs.litellm.ai/docs/proxy/logging)
+
 ## Load API Keys
 
 ### Load API Keys from Environment