Braintrust vs Portkey: who uses which
Customers, public proof and the companies that use both.
On usedby, 39 companies use Braintrust and 22 use Portkey. No company is listed with both yet. Braintrust leads among the DevTools & Infrastructure companies on usedby that use either tool.Latest check Oct 7, 2026: 61 of 61 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 Braintrust, Portkey, or both
Every company with a public proof for at least one of the two tools.
39
use only Braintrust
0
companies use both
22
use only Portkey
39 companies use only Braintrust, 22 use only Portkey and 0 use both, out of the 61 companies on usedby that use at least one of them.
Where it lands
Newest customers
We have not started tracking changes for Braintrust yet.
Where it lands
Newest customers
No new customer since tracking started on October 5, 2026.
Who uses both
Companies with a confirmed or observed line on both tools.
Side by side
Facts from our data and from each vendor's public pages. Each line says where it comes from.
Braintrust
PortkeyWhat customers report
Results as the vendor or the customer published them, with the source and the date.
Braintrust
Continuous signal, 30-min fix cycles
Rex
Vendor case study, braintrust.dev, captured Oct 6, 2026
Portkey
2x faster issue detection in development
Snorkel AI
Vendor case study, portkey.ai, captured Oct 5, 2026
How Fontys ICT uses Portkey
Fontys ICT
Vendor case study, portkey.ai, captured Oct 5, 2026
Questions about Braintrust and Portkey
Which is used more, Braintrust or Portkey?
Braintrust has more customers on usedby: 39 against 22 for Portkey.
Do companies use both Braintrust and Portkey?
usedby has not found a company with a confirmed or observed line on both Braintrust and Portkey yet.
Who uses Braintrust?
39 companies on usedby, each with the public page that shows it. See who uses Braintrust.
Who uses Portkey?
22 companies on usedby, each with the public page that shows it. See who uses Portkey.
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.