Contextual AI vs LangSmith: who uses which
Customers, public proof and the companies that use both.
On usedby, 4 companies use Contextual AI and 43 use LangSmith. No company is listed with both yet. LangSmith leads among the HR & Recruiting companies on usedby that use either tool.Latest check Oct 7, 2026: 41 of 47 public lines checked. Counts include every proof level, job-post signals included. Companies named on both have a confirmed or observed line on each side.
Who uses Contextual AI, LangSmith, or both
Every company with a public proof for at least one of the two tools.
4
use only Contextual AI
0
companies use both
43
use only LangSmith
4 companies use only Contextual AI, 43 use only LangSmith and 0 use both, out of the 47 companies on usedby that use at least one of them.
Where it lands
Newest customers
No new customer since tracking started on October 7, 2026.
Where it lands
Newest customers
No new customer since tracking started on October 3, 2026.
Who uses both
Companies with a confirmed or observed line on both tools.
Side by side
Facts from our data and from each vendor's public pages. Each line says where it comes from.
Contextual AI
LangSmithWhat customers report
Results as the vendor or the customer published them, with the source and the date.
Questions about Contextual AI and LangSmith
Which is used more, Contextual AI or LangSmith?
LangSmith has more customers on usedby: 43 against 4 for Contextual AI.
Do companies use both Contextual AI and LangSmith?
usedby has not found a company with a confirmed or observed line on both Contextual AI and LangSmith yet.
Who uses Contextual AI?
4 companies on usedby, each with the public page that shows it. See who uses Contextual AI.
Who uses LangSmith?
43 companies on usedby, each with the public page that shows it. See who uses LangSmith.
How does usedby count customers?
A company counts when a public page shows it: a vendor's customer page, a case study, a press release or a job post, most saved with a dated capture. Every line is a customer, at one of three proof levels: confirmed, observed or signal (a job post, the weakest). A company is named as using both tools when its lines on both are confirmed or observed.