Kuldeep Paul

AI browser · OpenAI

ChatGPT Atlas

Uses ChatGPT's search stack (OAI-SearchBot index plus partners); Atlas has no separate index.

Compiled by · Updated Oct 29, 2026

Operator
OpenAI
Launched
Oct 21, 2025
Search index
Uses ChatGPT's search stack (OAI-SearchBot index plus partners); Atlas has no separate index.Sources: openai.com, geodocs.dev
Crawlers
OAI-SearchBot — blocked by 7.6% of top sitesChatGPT-User — blocked by 9.6% of top sites
Referrer in analytics
chatgpt.com
UTM tagging
Citation links from the Atlas sidebar carry utm_source=chatgpt.com.Source: salt.agency
Ads
Inherits ChatGPT plan rules.
Citations
ChatGPT sidebar answers with source links.
Official docs
openai.com

What this means for visibility

Agent-mode visits look like ordinary browser traffic, so they are hard to separate from human sessions in analytics.

Questions

What search engine does ChatGPT Atlas use?

Uses ChatGPT's search stack (OAI-SearchBot index plus partners); Atlas has no separate index.

Which crawlers does ChatGPT Atlas use?

ChatGPT Atlas relies on OAI-SearchBot, ChatGPT-User. Agent-mode visits look like ordinary browser traffic, so they are hard to separate from human sessions in analytics.

How do I track ChatGPT Atlas traffic in analytics?

Clicks from ChatGPT Atlas arrive with the referrer chatgpt.com. Citation links from the Atlas sidebar carry utm_source=chatgpt.com. Add it to an AI channel in GA4 using a source regex.

Does ChatGPT Atlas show ads?

Inherits ChatGPT plan rules.

Analysis using this data

  1. The opt-out asymmetry: you can block the small AI engines, not the big oneThe AI surfaces with the most users are the ones publishers can't refuse and can't measure.

Other AI engines

ChatGPT · Google AI Overviews · Google AI Mode · Gemini · Perplexity · Comet · Claude · Microsoft Copilot · Meta AI · Grok · DeepSeek · Le Chat · You.com · Brave Search (Ask Brave) · Kagi Assistant · DuckDuckGo (Duck.ai & Search Assist) · Amazon Rufus (retired)

How to cite this data

This dataset is free to use, including commercially, under Creative Commons Attribution 4.0. The one rule is attribution:

  1. Credit the source as “Kuldeep Paul, kuldeep.cc” wherever you use a figure, chart or table from it.
  2. Link to this page (https://kuldeep.cc/data/ai-search/chatgpt-atlas), not to the download file, so readers can check the source of every number.
  3. Include the date. These figures change; say “as of Oct 29, 2026” or link to the version you used.
  4. Mark changes. If you filter, recalculate or chart the data yourself, say so (“analysis based on data from…”).
  5. Cite the original source for single figures when you quote one reported number; it is linked in every row.

In running text: according to Kuldeep Paul's ChatGPT Atlas — AI search engine reference (kuldeep.cc). More in the methodology.

APA

Paul, K. (2026). ChatGPT Atlas — AI search engine reference [Data set]. kuldeep.cc. https://kuldeep.cc/data/ai-search/chatgpt-atlas

MLA

Paul, Kuldeep. "ChatGPT Atlas — AI search engine reference." kuldeep.cc, 29 October 2026, https://kuldeep.cc/data/ai-search/chatgpt-atlas.

Chicago

Paul, Kuldeep. 2026. "ChatGPT Atlas — AI search engine reference." Dataset. kuldeep.cc. Updated Oct 29, 2026. https://kuldeep.cc/data/ai-search/chatgpt-atlas.

BibTeX

@misc{paul2026chatgptatlas, author = {Paul, Kuldeep}, title = {ChatGPT Atlas — AI search engine reference}, year = {2026}, howpublished = {\url{https://kuldeep.cc/data/ai-search/chatgpt-atlas}}, note = {Dataset, CC BY 4.0, updated 2026-10-29} }

HTML link

<a href="https://kuldeep.cc/data/ai-search/chatgpt-atlas">ChatGPT Atlas — AI search engine reference</a> (data: Kuldeep Paul, kuldeep.cc)