Optimize long prompts with Microsoft Copilot Notebook & GPTs
Press play on the video. It'll jump straight to the section that answers the
title above — no need to watch the full video.
Microsoft Copilot
Copilot
Productivity
Writing
A guide to using the Notebook feature in Microsoft Copilot, which supports up to 18,000 characters for refining long documents and using custom personas through Copilot GPTs.
Advantages of Notebook vs. Standard Chat
Notebook is specifically designed for 'prompt engineering'. You can modify your original prompt repeatedly and regenerate the output within the same window, unlike the standard chat mode which is chronological and sequential.
Generous Character Limits
With an 18,000-character limit, Notebook allows you to input nearly 10 to 15 pages of text at once, making it highly effective for summarizing meeting transcripts or research papers.
More from Boost Productivity & Research with AI
View All
Generate YouTube scripts and visual prompts with Microsoft Copilot GPT-4
Microsoft Copilot
GPT-4
None
ChatGPT
ChatGPT Projects
Convert complex image tables to Excel with GPT 5.2
GPT 5.2
Excel
Reduce AI hallucinations using Grounding and NotebookLM
NotebookLM
ChatGPT
Research and compare products with ChatGPT Shopping Research feature
ChatGPT
Learn complex topics interactively with Google Learn About
Google Learn About