AI Crawler Access Checker

AI crawlers are automated bots that visit websites to collect content for artificial intelligence systems. Unlike traditional search engine crawlers like Googlebot, which index pages so users can find them via search results, AI crawlers serve a different purpose: they feed content into large language models and AI-powered answer engines.

When GPTBot crawls your site, that content may end up in OpenAI's training data. When ChatGPT-User visits, it's fetching your page in real time to answer a user's question. The distinction matters because each type of AI crawler has different implications for your business.

The landscape has exploded. An Ahrefs study of 140 million domains identified 21+ distinct AI crawler user agents — up from roughly 10 just a year earlier. OpenAI, Anthropic, Google, Meta, Apple, and dozens of smaller players are all requesting access to your content.

Search engine crawlers vs. AI crawlers:

Understanding which AI crawlers are accessing your site is the first step toward making informed decisions about your content and AI strategy.

Your robots.txt file is the front door policy for every bot that visits your site. It's a plain text file at your domain root that tells crawlers which parts of your site they can and cannot access. For AI bots specifically, it's currently the primary mechanism for controlling whether your content gets scraped for model training or real-time retrieval.

The protocol is simple: you specify a User-agent (the bot name) and then Disallow rules for paths you want blocked. To block GPTBot from your entire site, you'd add:

But here's the catch: robots.txt is a voluntary protocol. There's no technical enforcement. Major companies like OpenAI, Anthropic, and Google publicly state they respect robots.txt directives. But compliance isn't universal — a Reuters investigation found multiple AI companies bypassing robots.txt on publisher sites, with Perplexity specifically accused of using alternative fetch mechanisms to circumvent blocks.

This makes checking your robots.txt configuration critical. Across the general web, only about 5.89% of sites explicitly block GPTBot according to Ahrefs — meaning the vast majority of websites are wide open to all AI crawlers by default. Most robots.txt files only mention Googlebot and Bingbot — the AI bots that arrived in 2023 and 2024 aren't covered.

The situation is evolving rapidly. In September 2024, Cloudflare introduced one-click AI crawler blocking — over one million domains adopted the feature within a year. Google introduced Google-Extended specifically to let site owners opt out of AI training while keeping their content in Google Search. OpenAI added OAI-SearchBot as a separate user agent from GPTBot, so you can allow AI-powered search while blocking training. Each AI company is creating more granular controls — but only if you configure them.

Not all AI crawlers do the same thing. The most important distinction in AI crawling is between training bots and retrieval bots. Getting this wrong can mean either giving away your content for free or making yourself invisible to AI-powered discovery.

Training bots vs. retrieval bots at a glance:

Many publishers haven't grasped this distinction yet. A BuzzStream study found that while 79% of major news sites block at least one AI training bot, 71% also block at least one retrieval bot — potentially cutting themselves off from AI-powered discovery without realizing it.

The smart approach for most businesses: block training bots to protect your intellectual property, but allow retrieval bots to maintain visibility in AI-powered search and answer engines.

This is the number one concern we hear: "If I block AI bots, will my Google rankings drop?" The short answer is no.

Google's own developer documentation states that Google-Extended controls AI training only — it has no effect on Google Search indexing. The robots.txt directives for AI crawlers are completely separate from Googlebot's behavior. Blocking GPTBot, ClaudeBot, or any other AI crawler does not change how Google crawls, indexes, or ranks your pages.

The data backs this up. Playwire's analysis of publisher traffic found that blocking AI crawlers resulted in less than 1% variation in organic search traffic — well within normal fluctuation. AI referral traffic itself currently accounts for roughly 0.1–0.15% of total website traffic, though it's growing 5–7x year-over-year.

That said, there's an important nuance. Blocking AI retrieval bots won't hurt your Google SEO either, but it will make you invisible in a growing discovery channel. As more buyers use ChatGPT, Perplexity, and Claude to research products, being absent from AI-generated answers is an increasing competitive disadvantage — even if your Google rankings are unaffected.

The strategic calculation isn't "will blocking hurt my SEO?" It's "what am I gaining vs. losing by allowing or blocking each specific bot?" That's where an AI crawler checker becomes essential — you need to know your current configuration before you can optimize it.

You don't need to manually read robots.txt files or cross-reference bot names. Here's how to audit your AI crawler configuration using CompetLab's AI Crawler Checker.

1. Enter your domain. Type any URL into the input field above and click Check Crawlers. The tool fetches your robots.txt and analyzes it against 21+ known AI crawlers.
2. Review the access summary. The results show a clear breakdown: how many AI bots are allowed, how many are blocked, and your overall AI openness score. A score of 100% means all AI bots can access your entire site.
3. Check individual bot statuses. The crawler table lists every AI bot by name, operator, type (training vs. retrieval), and current access status. Green means allowed, red means blocked.
4. Identify configuration gaps. Look for bots you didn't know about. Many sites block GPTBot but leave Meta-ExternalAgent and Bytespider wide open. The tool surfaces these blind spots.
5. Generate updated robots.txt rules. Use the snippet generator to create properly formatted robots.txt directives. Toggle individual bots on or off and copy the ready-to-use configuration.
6. Compare against industry benchmarks. Check how your configuration stacks up against notable sites in your industry. See whether leaders in your space are blocking or allowing specific AI crawlers.