On usedby, 56 companies use ChatGPT and 22 use Exa. 1 company uses both, including RingCentral. ChatGPT leads among the Fintech & Payments companies on usedby that use either tool, Exa among the DevTools & Infrastructure companies.Latest check Nov 15, 2026: 48 of 78 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 ChatGPT, Exa, or both
Every company with a public proof for at least one of the two tools.
55
listed for ChatGPT only
1
company uses both
21
listed for Exa only
On usedby, 55 companies are listed for ChatGPT only, 21 are listed for Exa only and 1 uses both, out of the 77 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, ChatGPT | First public proof, Exa |
|---|---|---|
 RingCentral | On or before Oct 2026 | On or before Nov 2026 |
By industry
Which tool the companies on usedby use, by industry. Shares of the companies on usedby that use ChatGPT, Exa or both: a share of the companies on usedby, not of the market.
Listed for ChatGPT onlyBothListed for Exa only
More common with ChatGPT
- Fintech & Payments5 of the 6 Fintech & Payments companies on usedby that use either tool use ChatGPT.
- Sales Tech & CRM3 of the 5 Sales Tech & CRM companies on usedby that use either tool use ChatGPT.
More common with Exa
- DevTools & Infrastructure5 of the 9 DevTools & Infrastructure companies on usedby that use either tool use Exa.
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.
Vendor facts checked: ChatGPT, 4 of 6; Exa, 3 of 6. Missing facts remain unverified, not absent features.
ChatGPTExaWhat customers report
Results as the vendor or the customer published them, with the source and the date.
ChatGPT
with people saving nearly three hours per week on routine tasks and more than 80% engaging daily.
BBVA
Vendor case study, openai.com, captured Oct 18, 2026
Exa
More than 9.1M Search requests to date
HockeyStack
Vendor case study, exa.ai, captured Nov 12, 2026
More than 7.2M Search requests to date: 11x uses Exa Search for high-volume prospect and account research.
11X
Vendor case study, exa.ai, captured Nov 12, 2026
Questions about ChatGPT and Exa
Which is used more, ChatGPT or Exa?
ChatGPT has more customers on usedby: 56 against 22 for Exa. ChatGPT leads among the Fintech & Payments companies on usedby that use either tool, Exa among the DevTools & Infrastructure companies.
Do companies use both ChatGPT and Exa?
Yes. 1 company uses both on usedby, including RingCentral.
Who uses ChatGPT?
56 companies on usedby, each with the public page that shows it. See who uses ChatGPT.
Who uses Exa?
22 companies on usedby, each with the public page that shows it. See who uses Exa.
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.