# GPTBot vs OAI-AdsBot

GPTBot and OAI-AdsBot compared on 9 documented fields, from 16 claims, last verified 2026-09-13.

| Field | GPTBot | OAI-AdsBot | Comparison |
| --- | --- | --- | --- |
| honours_crawl_delay | not_documented | not_documented | same |
| publishes_ip_list | yes | yes | same |
| purpose_documented | training | ads | different |
| respects_robots_txt | yes | not_documented | different |
| robots_txt_fetch_marker | yes | not documented | different |
| scope_of_crawling | not documented | limited to submitted ad landing pages | different |
| separate_search_and_training_tokens | yes | not_documented | different |
| user_agent_string_full | Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko); compatible; GPTBot/1.4; +https://openai.com/gptbot | Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko); compatible; OAI-AdsBot/1.0; +https://openai.com/adsbot | different |
| verifiable_by_rdns | not_documented | not_documented | same |

## Differences

| Field | GPTBot statement | OAI-AdsBot statement |
| --- | --- | --- |
| purpose_documented | GPTBot crawls content that may be used to train OpenAI generative AI foundation models. | OAI-AdsBot visits landing pages submitted as ads on ChatGPT to check compliance with OpenAI policies. |
| respects_robots_txt | GPTBot honours robots.txt rules that webmasters set for the GPTBot token. | OpenAI does not publish whether OAI-AdsBot honours robots.txt disallow rules. |
| robots_txt_fetch_marker | OpenAI may add a robots.txt marker to the GPTBot user agent string when GPTBot fetches robots.txt files. | not documented |
| scope_of_crawling | not documented | OAI-AdsBot visits only pages submitted as ads on ChatGPT. |
| separate_search_and_training_tokens | OpenAI separates search and training controls into two robots.txt tokens: OAI-SearchBot for search and GPTBot for training. | OpenAI does not document OAI-AdsBot as part of a search and training token split. |
| user_agent_string_full | GPTBot sends the user agent string Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko); compatible; GPTBot/1.4; +https://openai.com/gptbot. | OAI-AdsBot sends the user agent string Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko); compatible; OAI-AdsBot/1.0; +https://openai.com/adsbot. |

## Sources

- https://developers.openai.com/api/docs/bots
- https://openai.com/adsbot.json
- https://openai.com/gptbot.json