Companies using LangSmith
14 companies in the VendorStacks index name LangSmith 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.
Sample of companies using LangSmith
| Company | Used for |
|---|---|
| sparkco.ai | AI / ML |
| coalesce.io | AI / ML |
| fuel50.com | AI / ML |
| portkey.ai | AI / ML |
| rocketlane.com | AI / ML |
| arcade.dev | AI / ML |
| fieldguide.io | AI / ML |
| timeos.ai | AI / ML |
| file.squarespace-cdn.com | AI / ML |
| index.io | AI / ML |
Showing 10 of 14. The full list — with evidence, source URLs and refresh timestamps — comes back from one API call.
curl "https://vendorradar-production.up.railway.app /v1/prospect?vendor=LangSmith" \ -H "Authorization: Bearer vr_live_…"
Commonly appears alongside
Vendors that most often show up in the same stacks as LangSmith.
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 LangSmith, we can show you the sentence that says so. How it works →
Most recent refresh in this set: 2026-08-01.