Features
Deep research
Searches many sources and writes a long report with citations.
Usage
Tools → Deep research
When to use it
When you are doing market research or comparisons.
Source: https://help.openai.com/en/articles/6825453-chatgpt-release-notes
More ChatGPT features
Plugin directoryPlugins bundle apps, skills and templates, and ChatGPT and Codex share them. It replaces the old app directory.FeaturesNew 2026-07Apps in ChatGPTCall outside services such as Canva, Spotify, Zillow, Expedia, Figma and Coursera from inside a chat.FeaturesCustom GPTs shutdownCustom GPTs end on 2026-12-11 and are replaced by plugins.FeaturesNew 2026-09Plugin structureA package that holds skills (instructions and materials) and MCP servers, and can be discovered, installed, shared and published.FeaturesNew 2026-09Plugin interactive panels, sidebars and file viewersPlugins can now have their own panels and sidebars.FeaturesNew 2026-09Plugin multiple accountsPlugins other than Gmail and Calendar can now connect more than one account.FeaturesNew 2026-09
All ChatGPT