CrewAI vs LangSmith: who uses which
Customers, public proof and the companies that use both.
On usedby, 13 companies use CrewAI 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 6, 2026: 50 of 56 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 CrewAI, LangSmith, or both
Every company with a public proof for at least one of the two tools.
13
use only CrewAI
0
companies use both
43
use only LangSmith
13 companies use only CrewAI, 43 use only LangSmith and 0 use both, out of the 56 companies on usedby that use at least one of them.
Where it lands
Newest customers
No new customer since tracking started on October 6, 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.
By industry
Which tool the companies on usedby use, by industry. Shares of the companies on usedby that use CrewAI, LangSmith or both: a share of the companies on usedby, not of the market.
CrewAI onlyBothLangSmith only
More common with LangSmith
- HR & Recruiting5 of the 6 HR & Recruiting 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.
Source: confirmed and observed usedby lines. Job-post signals, the weakest proof level, are left out of these shares.
Side by side
Facts from our data and from each vendor's public pages. Each line says where it comes from.
CrewAILangSmithWhat customers report
Results as the vendor or the customer published them, with the source and the date.
CrewAI
The agent lifted qualified‑lead volume by 80%
Brickell Digital
Vendor case study, crewai.com, captured Oct 6, 2026
We can now integrate a new carrier in 10 minutes that used to take us 5 days.”
Gelato
Vendor case study, crewai.com, captured Oct 6, 2026
LangSmith
No reviewed story for LangSmith yet.
Questions about CrewAI and LangSmith
Which is used more, CrewAI or LangSmith?
LangSmith has more customers on usedby: 43 against 13 for CrewAI.
Do companies use both CrewAI and LangSmith?
usedby has not found a company with a confirmed or observed line on both CrewAI and LangSmith yet.
Who uses CrewAI?
13 companies on usedby, each with the public page that shows it. See who uses CrewAI.
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.