What is GPTBot?
OpenAI's web crawler for collecting model training data. Distinct from OAI-SearchBot, which powers live ChatGPT Search retrieval.
Definition
GPTBot is OpenAI's crawler for gathering public web content used to train its models. It identifies itself with the user-agent GPTBot, respects robots.txt, and publishes its IP ranges for verification. It is one of the most active AI crawlers on the web — Cloudflare's 2025 reporting placed it among the top bots by request volume.
Critically, it is not the bot behind ChatGPT's live answers: that is OAI-SearchBot (search index) plus ChatGPT-User (on-demand fetches when a user asks about a URL).
Why it matters
The distinction drives real strategy. Blocking GPTBot keeps your content out of future training runs but doesn't remove you from ChatGPT Search answers; blocking OAI-SearchBot does. Many sites blanket-blocked all AI bots in 2023–24 (often via CDN defaults) and unknowingly deleted themselves from the answer layer buyers now use. Audit your robots.txt with each bot's job in mind.
Frequently asked
Should I block GPTBot?
It depends on whether training inclusion benefits you. For most B2B brands, being 'known' to future models is upside — models recommend what they know. Publishers monetizing content may reasonably decide otherwise.
How do I verify a request is really GPTBot?
Match the requesting IP against OpenAI's published ranges. Scrapers routinely fake the user-agent string.
Related terms
- Generative Engine Optimization (GEO)The discipline of increasing a brand's visibility inside AI-generated answers — the successor field to SEO for the AI search era.
- GroundingConnecting a language model's answer to retrieved real-world sources at answer time, reducing hallucination and creating the citation opportunity.
- AI CitationsThe linked sources an AI assistant credits when generating an answer. Being cited is the AI-era equivalent of ranking #1.
- AI CrawlerBots operated by AI companies — GPTBot, ClaudeBot, PerplexityBot, Google-Extended — that fetch web content for model training or live answer retrieval.