LangSmith vs TrueFoundry: who uses which
Customers, public proof and the companies that use both.
On usedby, 43 companies use LangSmith and 27 use TrueFoundry. 1 company uses both, including Nvidia. LangSmith leads among the HR & Recruiting companies on usedby that use either tool.Latest check Oct 6, 2026: 64 of 70 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 LangSmith, TrueFoundry, or both
Every company with a public proof for at least one of the two tools.
42
use only LangSmith
1
company uses both
26
use only TrueFoundry
42 companies use only LangSmith, 26 use only TrueFoundry and 1 uses both, out of the 69 companies on usedby that use at least one of them.
Where it lands
Newest customers
No new customer since tracking started on October 3, 2026.
Where it lands
Newest customers
We have not started tracking changes for TrueFoundry yet.
Who uses both
Companies with a confirmed or observed line on both tools.
| Company |
|---|
 Nvidia |
Side by side
Facts from our data and from each vendor's public pages. Each line says where it comes from.
LangSmith
TrueFoundryWhat customers report
Results as the vendor or the customer published them, with the source and the date.
LangSmith
No reviewed story for LangSmith yet.
TrueFoundry
7+ production services upgraded in <20 minutes, without infra dependencies
Aviva Credito
Vendor case study, truefoundry.com, captured Oct 6, 2026
the gateway processed more than 4 million requests across chat completions, responses, embeddings, and MCP calls
FloQast
Vendor case study, truefoundry.com, captured Oct 6, 2026
Questions about LangSmith and TrueFoundry
Which is used more, LangSmith or TrueFoundry?
LangSmith has more customers on usedby: 43 against 27 for TrueFoundry.
Do companies use both LangSmith and TrueFoundry?
Yes. 1 company uses both on usedby, including Nvidia.
Who uses LangSmith?
43 companies on usedby, each with the public page that shows it. See who uses LangSmith.
Who uses TrueFoundry?
27 companies on usedby, each with the public page that shows it. See who uses TrueFoundry.
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.