Companies using OpenRouter
9 companies in the VendorStacks index name OpenRouter as part of their ai / ml stack in their public web presence. Every match carries the quoted source row it was extracted from — no inference, no fingerprint guessing.
AI / ML
Sample of companies using OpenRouter
| Company | Used for |
|---|---|
| f4.fund | AI / ML |
| crusoe.ai | AI / ML |
| gr.inc | AI / ML |
| promptarmor.com | AI / ML |
| portkey.ai | AI / ML |
| withlantern.com | AI / ML |
| index.io | AI / ML |
| hginsights.com | AI / ML |
| invent.ai | AI / ML |
Commonly appears alongside
Vendors that most often show up in the same stacks as OpenRouter.
How this is collected
VendorStacks runs a multi-source extraction pipeline over a company's public web presence: crawling, rendering JavaScript pages and PDFs, and matching a deterministic vendor taxonomy against what the company itself publishes. Nothing is inferred from tracking pixels or guessed from job posts — if we say a company uses OpenRouter, we can show you the sentence that says so. How it works →
Most recent refresh in this set: 2026-08-01.