LangSmith vs Manufact: who uses which
Customers, public proof and the companies that use both.
On usedby, 46 companies use LangSmith and 23 use Manufact. 2 companies use both, including Nvidia and Elastic. LangSmith leads among the IT Services & System Integration companies on usedby that use either tool.Latest check Nov 2, 2026: 63 of 69 public lines checked. Counts include every proof level, job-post signals included. A company on both tools counts at any proof level, and a job post on one side is marked as such.
Who uses LangSmith, Manufact, or both
Every company with a public proof for at least one of the two tools.
44
listed for LangSmith only
2
companies use both
21
listed for Manufact only
On usedby, 44 companies are listed for LangSmith only, 21 are listed for Manufact only and 2 use both, out of the 67 companies listed for at least one. An absent listing does not prove non-use.
Where it lands
Recently publicly listed customers
No new public customer listing since tracking started on October 3, 2026.
Who uses both
Companies with a public line on both tools, at any proof level: the strongest proofs come first, and a job post is marked.
| Company | First public proof, LangSmith |
|---|---|
 Nvidia | On or before May 2026 |
 Elastic | On or before Dec 2024 |
By industry
Which tool the companies on usedby use, by industry. Shares of the companies on usedby that use LangSmith, Manufact or both: a share of the companies on usedby, not of the market.
Listed for LangSmith onlyBothListed for Manufact only
More common with LangSmith
- IT Services & System Integration4 of the 6 IT Services & System Integration companies on usedby that use either tool use LangSmith.
- Fintech & Payments4 of the 5 Fintech & Payments companies on usedby that use either tool use LangSmith.
- HR & Recruiting5 of the 5 HR & Recruiting companies on usedby that use either tool use LangSmith.
Source: every usedby line, from confirmed proofs to job-post signals (the weakest proof level).
Side by side
Facts from our data and from each vendor's public pages. Each line says where it comes from.
Vendor facts checked: LangSmith, 2 of 3; Manufact, 3 of 3. Missing facts remain unverified, not absent features.
LangSmith
ManufactWhat customers report
Results as the vendor or the customer published them, with the source and the date.
LangSmith
Manufact
No reviewed story for Manufact yet.
Questions about LangSmith and Manufact
Which is used more, LangSmith or Manufact?
LangSmith has more customers on usedby: 46 against 23 for Manufact.
Do companies use both LangSmith and Manufact?
Yes. 2 companies use both on usedby, including Nvidia and Elastic.
Who uses LangSmith?
46 companies on usedby, each with the public page that shows it. See who uses LangSmith.
Who uses Manufact?
23 companies on usedby, each with the public page that shows it. See who uses Manufact.
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 four proof levels: confirmed, declared by the company itself, observed or signal (a job post, the weakest). A company counts as using both tools when it has a line on each, at any level; the list shows the strongest proofs first and marks job posts.