Browserbase vs LangSmith: who uses which
Customers, public proof and the companies that use both.
On usedby, 19 companies use Browserbase and 43 use LangSmith. 1 company uses both, including Clay. Browserbase leads among the Artificial Intelligence companies on usedby that use either tool, LangSmith among the Fintech & Payments companies.Latest check Oct 13, 2026: 56 of 62 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 Browserbase, LangSmith, or both
Every company with a public proof for at least one of the two tools.
18
use only Browserbase
1
company uses both
42
use only LangSmith
18 companies use only Browserbase, 42 use only LangSmith and 1 uses both, out of the 61 companies on usedby that use at least one of them.
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, Browserbase |
|---|---|
 Clay | On or before Oct 2025 |
By industry
Which tool the companies on usedby use, by industry. Shares of the companies on usedby that use Browserbase, LangSmith or both: a share of the companies on usedby, not of the market.
Browserbase onlyBothLangSmith only
More common with Browserbase
- Artificial Intelligence7 of the 9 Artificial Intelligence companies on usedby that use either tool use Browserbase.
More common with LangSmith
- Fintech & Payments4 of the 7 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.
BrowserbaseLangSmithWhat customers report
Results as the vendor or the customer published them, with the source and the date.
Questions about Browserbase and LangSmith
Which is used more, Browserbase or LangSmith?
LangSmith has more customers on usedby: 43 against 19 for Browserbase. Browserbase leads among the Artificial Intelligence companies on usedby that use either tool, LangSmith among the Fintech & Payments companies.
Do companies use both Browserbase and LangSmith?
Yes. 1 company uses both on usedby, including Clay.
Who uses Browserbase?
19 companies on usedby, each with the public page that shows it. See who uses Browserbase.
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 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.