What is Parallel World: a service that measures and monitors how AI sees your website, for LLMO and AIO
Parallel World measures and monitors how your website looks to AI agents. From training crawlers to shopping agents, it measures how your site looks to AI across 5 stages, and monitors how it changes.
- A. Training
- Who touches your site
- GPTBot, ClaudeBot, Google-Extended, etc.
- What they look at
- robots.txt, Content-Signal
- B. Search index
- Who touches your site
- Googlebot, Bingbot, OAI-SearchBot, etc.
- What they look at
- Sitemap, structured data
- C. Fetch at answer time
- Who touches your site
- ChatGPT-User, Claude-User, etc.
- What they look at
- Whether key information is in the raw HTML
- D. Browsing and actions
- Who touches your site
- Browser agents
- What they look at
- Accessibility tree, forms
- E. Transactions
- Who touches your site
- Shopping agents
- What they look at
- Whether they stop before payment
Source: the stage table on pw.migurei.ai, read 30 October 2026. It measures how each stage sees your site, not how often AI answers mention you.
What does Parallel World measure?
It does not invent scoring criteria: it gathers the published criteria of Cloudflare, Google, OpenAI, Anthropic and others, plus official tool results where a provider has one, and shows where they conflict and when they change. The aim: when someone asks AI about you, the answer uses the correct information about your company.
How can I check for free whether robots.txt refuses AI bots?
Enter a site's domain name in the AI bot access check (https://pw.migurei.ai/en/check/ai-bots?src=mg-guide). It reads the site's robots.txt once and shows, in a table, which of the main AI bots may fetch the front page (/). The domain you enter is not stored and not logged.
How can I check llms.txt and the sitemap too, for free?
The free scan (free LLMO check, https://pw.migurei.ai/en/free-scan?src=mg-guide) scans one site once and gives you the raw results for its robots.txt, llms.txt and sitemap and for Google PageSpeed Insights. Entering an email address is optional, and a scan can take a few minutes.
- Enter a domainAn email address is optional
- One read-only scanNo forms, no logins; it can take a few minutes
- Raw results returned as fetchedrobots.txt, llms.txt, sitemap and PageSpeed Insights; no score of our own
- Weekly monitoring shows what changedWhere the standards disagree and what moved
Source: the free scan and monitoring descriptions on pw.migurei.ai, read 30 October 2026.
How much does it cost?
- Free scan (無料スキャン): free. The results of one scan of one site.
- Monitoring (モニタリング): JPY 32,780 per site per month, tax included (JPY 29,800 before tax). Annual: JPY 327,800, tax included (the price of 10 months). One scan a week.
- Improvement verification (改善検証), pilot: please contact us.
- Payment is by invoice. We do not take credit cards.
Full terms are on the pricing page (https://pw.migurei.ai/en/pricing?src=mg-guide).
What does a scan do to my site?
Scans are read-only. The scanner does not submit forms, add items to a cart, sign up or log in. It does not solve CAPTCHAs or change its User-Agent to get around a block, and it does not access pages disallowed in robots.txt.
The scanner identifies itself with the User-Agent migurei-ParallelWeb/0.1 (+https://migurei.ai/ja/scanner; research@migurei.ai); use the robots.txt token migurei-ParallelWeb to allow or disallow it. Its specification is at https://migurei.ai/en/scanner.
How do Japanese sites treat AI bots?
In Parallel World's survey of the top 1,000 .jp domains on the Tranco list (26 October 2026), 74 sites (10.3%) of the 719 whose robots.txt gave a verdict did not allow GPTBot to crawl the top page. 7 sites (1.0%) disallowed Googlebot, and 105 sites (14.6%) allowed Googlebot while disallowing at least one AI training bot. 29 of the 1,000 (2.9%) had an llms.txt on their own domain.
All the numbers, the method and the aggregate data (CSV) are at https://pw.migurei.ai/en/research/japanese-sites-and-ai-bots?src=mg-guide, updated weekly.
Who runs it?
Parallel World is a service of Migurei (HBLAB). migurei.ai is a subsidiary of 株式会社エイチビーラボジャパン. The seller is 株式会社エイチビーラボジャパン (HBLAB Japan), and invoices are issued by the seller. More about the service: https://pw.migurei.ai/en/?src=mg-guide
What this guide rests on, and its limits
- It was written by Migurei (a subsidiary of HBLAB Japan), which provides Parallel World. Everything in it is stated on pw.migurei.ai.
- The numbers on Japanese sites were measured and counted by us with our own scanner. No independent party has checked them.
- The sample is 1,000 .jp domains from the Tranco list, measured on 26 October 2026; it is not "the Japanese web". robots.txt is a request, not a barrier, and these numbers say nothing about which bots actually visit.
- Prices and features are as stated on pw.migurei.ai on 30 October 2026 and may change.
Frequently asked questions
Can I use Parallel World for free?
The free scan scans one site once, for free (https://pw.migurei.ai/en/free-scan?src=mg-guide). Monitoring, which scans one site every week, costs JPY 32,780 per site per month, tax included.
Can it measure how often AI answers mention my company (mention rate)?
No. Parallel World does not track mention rate. It measures and monitors how your website looks to AI crawlers and AI agents, door by door.
Does a scan put load on my site?
At most 50 requests per scan that the scanner sends itself (images and scripts the page loads while rendering are counted under a separate cap), and at least 2 to 3 seconds between requests to the same domain.
Will you do the LLMO or AIO work, or consult on it?
No. Parallel World is a measurement service, not an optimization agency or consultancy.