update

Author: mrbullwinkle

articles/ai-services/openai/how-to/chatgpt.md

@@ -1,18 +1,18 @@
 ---
-title: Work with the GPT-35-Turbo and GPT-4 models 
+title: Work with chat completion models
 titleSuffix: Azure OpenAI Service
-description: Learn about the options for how to use the GPT-35-Turbo and GPT-4 models.
+description: Learn about the options for how to use models with the chat completions API
 author: mrbullwinkle #dereklegenzoff
 ms.author: mbullwin #delegenz
 ms.service: azure-ai-openai
 ms.custom: build-2023, build-2023-dataai, devx-track-python
 ms.topic: how-to
-ms.date: 09/05/2024
+ms.date: 03/26/2025
 manager: nitinme
 keywords: ChatGPT
 ---
 
-# Work with the GPT-3.5-Turbo, GPT-4 models, and GPT-4o models
+# Work with chat completions models
 
 GPT-3.5-Turbo, GPT-4, and GPT-4o series models are language models that are optimized for conversational interfaces. The models behave differently than the older GPT-3 models. Previous models were text-in and text-out, which means they accepted a prompt string and returned a completion to append to the prompt. However, the latest models are conversation-in and message-out. The models expect input formatted in a specific chat-like transcript format. They return a completion that represents a model-written message in the chat. This format was designed specifically for multi-turn conversations, but it can also work well for nonchat scenarios.