ChatGPT vs Perplexity: who uses which
Customers, public proof and the companies that use both.
On usedby, 40 companies use ChatGPT and 26 use Perplexity. 1 company uses both, including PayPal. Perplexity leads among the Fintech & Payments companies on usedby that use either tool.Latest check Oct 8, 2026: 29 of 66 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 ChatGPT, Perplexity, or both
Every company with a public proof for at least one of the two tools.
39
use only ChatGPT
1
company uses both
25
use only Perplexity
39 companies use only ChatGPT, 25 use only Perplexity and 1 uses both, out of the 65 companies on usedby that use at least one of them.
Where it lands
Newest customers
We have not started tracking changes for ChatGPT yet.
Where it lands
Newest customers
We have not started tracking changes for Perplexity yet.
Who uses both
Companies with a confirmed or observed line on both tools.
| Company |
|---|
 PayPal |
By industry
Which tool the companies on usedby use, by industry. Shares of the companies on usedby that use ChatGPT, Perplexity or both: a share of the companies on usedby, not of the market.
ChatGPT onlyBothPerplexity only
More common with Perplexity
- Fintech & Payments5 of the 7 Fintech & Payments companies on usedby that use either tool use Perplexity, 1 of them alongside ChatGPT.
- Investment & VC4 of the 6 Investment & VC companies on usedby that use either tool use Perplexity.
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.
ChatGPTPerplexityWhat customers report
Results as the vendor or the customer published them, with the source and the date.
Questions about ChatGPT and Perplexity
Which is used more, ChatGPT or Perplexity?
ChatGPT has more customers on usedby: 40 against 26 for Perplexity.
Do companies use both ChatGPT and Perplexity?
Yes. 1 company uses both on usedby, including PayPal.
Who uses ChatGPT?
40 companies on usedby, each with the public page that shows it. See who uses ChatGPT.
Who uses Perplexity?
26 companies on usedby, each with the public page that shows it. See who uses Perplexity.
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.