# DataForAEO > Data for AEO (answer engine optimization): measured AI-assistant demand per page, AI answers and citations, and AI keyword volume, as one API. Built by Advance Labs Inc. (London, Ontario). Not affiliated with DataForSEO. DataForAEO is the registry of AI-search data. AI companies publish no query volume, so DataForAEO measures what can be measured and labels what is modelled. ## Datasets - [Measured AI demand](https://dataforaeo.dev/#measured-ai-demand): how often AI assistants (ChatGPT-User, Claude-User, Perplexity-User and others) fetch a page because a person asked, per page per day. Each hit is checked against the vendor's published IP ranges and counted as verified, unverified or unknown. Status: live. - [AI keyword volume](https://dataforaeo.dev/#ai-keyword-volume): weekly Bing search volume per keyword (measured) and estimated AI-assistant demand (modelled, labelled an estimate). Status: building. - [AI answers and citations](https://dataforaeo.dev/#ai-answers-and-citations): what each AI engine answers for a prompt, which brands it names and which URLs it cites, with rank. Status: building. - [Citation index](https://dataforaeo.dev/#citation-index): which domains get cited per topic, week by week, published only as aggregates over 5 or more workspaces. Status: building. - [AI referrals](https://dataforaeo.dev/#ai-referrals): visits from chatgpt.com, perplexity.ai, Gemini, Copilot and claude.ai. Status: planned. ## Reference - [AI crawler list](https://dataforaeo.dev/ai-crawlers): every AI bot user agent (ChatGPT-User, OAI-SearchBot, GPTBot, Claude-User, ClaudeBot, Perplexity-User, PerplexityBot and more), what each does, which mean a person asked, and how to verify each by its vendor's published IP ranges. - [API docs](https://dataforaeo.dev/docs): the DataForAEO API v1 (beta): AI crawler registry and IP verification (free, no key), measured AI demand per page, and live AI answers with citations. ## Privacy The collector stores daily counts per page, bot, kind and verification. It stores no IP addresses, query strings, cookies or human traffic. ## Related - [AEO Toolkit](https://aeo.advancelabs.dev): the Advance Labs dashboard where you install the collector and track whether AI names your brand. - [Advance Labs](https://advancelabs.dev) ## Use cases - [Track AI crawler visits to your site](https://dataforaeo.dev/use-cases/track-ai-crawler-visits): See every ChatGPT, Claude and Perplexity bot that reads your pages, split into people asking, search indexing and training, with each hit checked by IP. Status: live.