Daytona vs LangSmith: who uses which
Customers, public proof and the companies that use both.
On usedby, 31 companies use Daytona and 44 use LangSmith. 2 companies use both, including Rillet and Clay. Daytona leads among the DevTools & Infrastructure companies on usedby that use either tool, LangSmith among the HR & Recruiting companies.Latest check Oct 27, 2026: 69 of 75 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 Daytona, LangSmith, or both
Every company with a public proof for at least one of the two tools.
29
listed for Daytona only
2
companies use both
42
listed for LangSmith only
On usedby, 29 companies are listed for Daytona only, 42 are listed for LangSmith only and 2 use both, out of the 73 companies listed for at least one. An absent listing does not prove non-use.
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 |
|---|---|
 Rillet | On or before Oct 2026 |
 Clay | On or before Mar 2026 |
By industry
Which tool the companies on usedby use, by industry. Shares of the companies on usedby that use Daytona, LangSmith or both: a share of the companies on usedby, not of the market.
Listed for Daytona onlyBothListed for LangSmith only
More common with Daytona
- DevTools & Infrastructure6 of the 9 DevTools & Infrastructure companies on usedby that use either tool use Daytona.
- Artificial Intelligence4 of the 6 Artificial Intelligence companies on usedby that use either tool use Daytona.
More common with 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.
DaytonaLangSmithWhat customers report
Results as the vendor or the customer published them, with the source and the date.
Daytona
95% faster execution of SWE-Bench Verified
Martian
Vendor case study, daytona.io, captured Oct 27, 2026
90% savings on infrastructure costs compared to an in-house build
Writer
Vendor case study, daytona.io, captured Oct 27, 2026
LangSmith
No reviewed story for LangSmith yet.
Questions about Daytona and LangSmith
Which is used more, Daytona or LangSmith?
LangSmith has more customers on usedby: 44 against 31 for Daytona. Daytona leads among the DevTools & Infrastructure companies on usedby that use either tool, LangSmith among the HR & Recruiting companies.
Do companies use both Daytona and LangSmith?
Yes. 2 companies use both on usedby, including Rillet and Clay.
Who uses Daytona?
31 companies on usedby, each with the public page that shows it. See who uses Daytona.
Who uses LangSmith?
44 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 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.