Short Answer
For ChatGPT Ads, crawler access is not just SEO housekeeping. OpenAI tells advertisers that landing pages must be valid, reachable, and must not block OAI-AdsBot or OAI-SearchBot.
What the Bots Do
OpenAI crawler documentation separates different user agents by purpose. For this hub, the critical advertising requirement is simple: ad landing pages must be reachable by OAI-AdsBot and OAI-SearchBot.
OAI-SearchBot is used for search discovery, while OAI-AdsBot is tied to ad landing page access and review readiness. GPTBot is a separate crawler associated with training and can be managed independently.
Recommended Robots.txt Setup
If your site is generally public, the simplest setup is to allow all crawlers and include explicit allow rules for OAI-SearchBot and OAI-AdsBot. This site uses that approach to avoid accidental ad review issues.
Example: User-agent: OAI-SearchBot Allow: / and User-agent: OAI-AdsBot Allow: /. Keep the sitemap URL visible.
What Can Break Delivery
Blocking user agents in robots.txt is only one failure mode. Server firewalls, bot protection, redirects, geo rules, broken canonical paths, noindex tags, and invalid landing page URLs can also stop review or weaken relevance.
Test landing pages with a clean browser, verify they load without login, and keep ad copy aligned with the destination page.
Beta Caveat
ChatGPT Ads and Ads Manager Beta are evolving. Validate pricing, eligibility, formats, measurement, and launch requirements against OpenAI Help Center documentation before committing budget.
FAQ
What is OAI-AdsBot?
It is an OpenAI user agent advertisers must not block when ChatGPT Ads landing pages are being evaluated.
Does allowing OAI-AdsBot mean allowing training?
No. OAI-AdsBot is separate from GPTBot. Site owners can manage different OpenAI user agents independently.
Should robots.txt explicitly allow OAI-SearchBot?
Yes, if you want to avoid accidental blocking for ChatGPT search discovery and ad landing page guidance.
Official Sources
These pages use official OpenAI documentation as the primary source of truth, with beta language kept intentionally conservative.