GPTBot

OAI-SearchBot is OpenAI's real-time retrieval crawler, used by ChatGPT Search and SearchGPT to fetch live web pages when a user query requires fresh information. It is distinct from GPTBot (training crawler) and ChatGPT-User (URL-paste fetcher) — and unlike GPTBot, allowing OAI-SearchBot has no impact on training data, only on whether a page can appear as a citation in ChatGPT Search results. Why it matters: Blocking OAI-SearchBot makes a page invisible to ChatGPT Search answers regardless of how strong its authority signals are. For brands targeting ChatGPT visibility, allowing this bot is non-negotiable.

The robots.txt file is a plain text file placed in a website's root directory that provides instructions to search engine crawlers and AI bots about which pages or sections of the site they are permitted or forbidden to crawl. It uses the Robots Exclusion Protocol to communicate directives like 'Disallow' (block crawling) and 'Allow' (permit crawling) to specific user agents. Why it matters: Strategic robots.txt configuration is essential for managing crawl budget, protecting sensitive pages from indexing, and — increasingly — controlling which AI training bots can access your content. For brands focused on AI search visibility, selectively allowing citation-focused bots (like ChatGPT-User and PerplexityBot) while blocking training-only crawlers (like GPTBot and CCBot) ensures your content is available for AI-generated citations without being used for unattributed model training. This nuanced approach to bot management is becoming a critical component of modern SEO and content protection strategy.

llms.txt is a proposed plain-text file placed at the root of a website (e.g. /llms.txt) that summarizes the site's purpose, lists its most important canonical URLs, and provides AI crawlers with a compact, structured map of what the site is authoritative on. It is the AI-engine analog to robots.txt and sitemap.xml, designed specifically to help large language models index, ground, and cite the right pages. Why it matters: As ChatGPT, Perplexity, Claude, Google AI Overviews, and Bing Copilot increasingly drive discovery, llms.txt is becoming a meaningful AEO and GEO infrastructure layer. A well-crafted llms.txt tells AI engines exactly which pillar guides, services, and authoritative resources to cite when answering questions in the brand's domain — reducing the risk of being misrepresented or omitted. Sites without llms.txt are not penalized, but sites with a clean, accurate llms.txt give themselves a structural advantage in AI citation outcomes. Smart Money Media's own llms.txt is publicly available at /llms.txt, and any site can generate a spec-compliant file in 30 seconds with our free llms.txt generator at /tools/llms-txt-generator.

OpenAI's web search feature integrated into ChatGPT that retrieves and cites real-time information from the web. Brands with strong E-E-A-T signals and structured data are more likely to be cited in ChatGPT responses. Why it matters: This feature fundamentally changes how information is consumed and how brands are discovered. For reputation management and SEO, being cited by ChatGPT Search means your brand is considered a credible source for AI-generated answers. This requires a focus on clear, concise, and accurate content that directly answers user queries, backed by strong E-E-A-T. For example, when a user asks ChatGPT about the "best practices for digital PR," the AI's response, if it cites your website, effectively amplifies your authority and drives direct traffic from a highly engaged audience, bypassing traditional search result pages.

ChatGPT is the conversational AI assistant developed by OpenAI, launched in November 2022, that interprets natural-language questions and generates synthesized written answers using large language models (currently the GPT-4 and GPT-5 family). With the addition of ChatGPT Search, it now actively browses the live web and cites external sources directly inside its responses, making it one of the most influential answer engines alongside Google AI Overviews and Perplexity. Why it matters: For brands, ChatGPT is no longer just a chatbot — it is an active referral source and reputation surface. When prospects ask ChatGPT about a service, an industry, or a specific company by name, the brands that get cited inside the answer win the trust transfer and the click-through. Earning ChatGPT citations requires the same foundations as Answer Engine Optimization: third-party validation from authoritative outlets, complete schema markup, comprehensive FAQ content, and a public llms.txt file that tells AI crawlers what your site is authoritative on. Brands invisible to ChatGPT in 2026 are increasingly invisible to their own prospects.

SearchGPT is OpenAI's AI-powered search product (now integrated into ChatGPT Search) that retrieves real-time web information and synthesizes it into conversational answers with inline source citations. It uses a combination of OpenAI's own crawler (OAI-SearchBot), Bing's index, and live web fetching to ground responses in current information rather than relying solely on the model's training data. Why it matters: SearchGPT is the dominant AI search surface for ChatGPT's hundreds of millions of users. Brands that earn citations here capture traffic and trust that previously went to Google. Optimization requires the same fundamentals as AEO: structured data, strong topical authority, third-party mentions, and content written in clear, citation-friendly passages.