update docs

Author: mrbullwinkle

articles/cognitive-services/openai/concepts/advanced-prompt-engineering.md

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+---
+title: Prompt Engineering Techniques with Azure OpenAI
+titleSuffix: Azure OpenAI Service
+description: Learn about the options for how to use prompt engineering with GPT-3, ChatGPT, and GPT-4 models
+author: mrbullwinkle 
+ms.author: mbullwin 
+ms.service: cognitive-services
+ms.topic: conceptual 
+ms.date: 03/21/2023
+manager: nitinme
+keywords: ChatGPT
+zone_pivot_groups: openai-prompt
+---
+
+# Prompt Engineering Techniques
+
+This guide will walk you through some advanced techniques in prompt design and prompt engineering. If you are new to prompt engineering we recommend starting with our [introduction to prompt engineering guide](prompt-engineering.md).
+
+While the principles of prompt engineering can be generalized across many different model types, certain models expect a specialized prompt structure. For Azure OpenAI GPT models, there are currently two distinct APIs where prompt engineering comes into play:
+
+- Chat Completion API.
+- Completion API.
+
+Each API requires input data to be formatted differently, which in turn impacts overall prompt design. The Chat Completion API supports the ChatGPT (preview) and GPT-4 (preview) models. These models are designed to take input formatted in a [specific chat-like transcript](../how-to/chatgpt.md) divided across an array of dictionaries.
+
+The Completion API supports the older GPT-3 models and has much more flexible input requirements in that it takes a string of text with no specific format rules.
+
+> [!NOTE]
+> Technically the ChatGPT (preview) models can be used with either API's, but we strongly recommend using the Chat Completion API for these models. To learn more, please consult our [in-depth guide on using the two API](../how-to/chatgpt.md). 
+
+::: zone pivot="programming-language-chat-completions"
+
+[!INCLUDE [Prompt Chat Completion](../includes/chat-completion.md)]
+
+::: zone-end
+
+::: zone pivot="programming-language-completions"
+
+[!INCLUDE [Prompt Completion](../includes/chat-markup-language.md)]
+
+::: zone-end