Why some AI testing companies are not in the directory
By AI Testing Vendors · 2026-11-09
Most exclusions come from three rules: the vendor's AI page names no AI product type, the headquarters country is not confirmed by two sources, or the site cannot be read by automated access. Software-only vendors are out of scope.
Exclusions by reason
Each company that was assessed and not published carries one reason code.
| Reason code | Rule | Companies |
|---|---|---|
| tool-only | The company sells software and has no testing services practice with its own service page | 21 |
| no-ai-page | No page on the vendor's site names testing of at least one AI product type | 32 |
| website-down | Website or its AI page could not be read by automated access at collection and again at verification (offline, error, or access blocked) | 20 |
| no-hq | HQ country could not be confirmed by two agreeing sources | 32 |
| conflict-unresolved | HQ country conflicts across sources and cannot be resolved | 6 |
| owner-excluded | Excluded by the directory's disclosures | 3 |
| duplicate | Same legal entity as an existing record; merged into that record | 1 |
| nonprofit-evaluator | Research institute or nonprofit evaluator without commercial testing services | 2 |
No AI page that names a product type
The most common gap is a page about "AI testing" that turns out to describe using AI to test ordinary software, such as test generation or self-healing scripts. That is a different service. A page qualifies when it offers testing of an AI system for clients and names what kind of system, for example LLM applications, AI agents or computer vision.
Headquarters not confirmed
The HQ country needs two sources that agree: the vendor's own contact, about or legal page, and an independent source such as a company registry, a filing or a review platform profile. A press release dateline does not count, because it says where the release was issued.
Sites that cannot be read
Some vendor sites block automated reading or return an error. The directory does not get around those blocks. The note on the not-published page does not claim such a site is offline.
Software-only vendors
Evaluation platforms, red-teaming software and observability tools are outside the scope unless the company also runs a testing service with its own page. They are listed with the code tool-only.
How to be listed
- 01
Publish the page
A page on your own site that offers AI testing to clients and names the AI product types you test.
- 02
Make HQ checkable
Name your headquarters or registered office on your site; keep your registry or review platform profile current.
- 03
Send one email
Company name and the URL of the AI testing page, as described on the submit page.