ChatGPT vs Hebbia: who uses which
Customers, public proof and the companies that use both.
On usedby, 40 companies use ChatGPT and 14 use Hebbia. 1 company uses both, including Morgan Stanley. Hebbia leads among the Investment & VC companies on usedby that use either tool.Latest check Oct 8, 2026: 20 of 54 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, Hebbia, or both
Every company with a public proof for at least one of the two tools.
39
use only ChatGPT
1
company uses both
13
use only Hebbia
39 companies use only ChatGPT, 13 use only Hebbia and 1 uses both, out of the 53 companies on usedby that use at least one of them.
Who uses both
Companies with a confirmed or observed line on both tools.
| Company |
|---|
 Morgan Stanley |
Side by side
Facts from our data and from each vendor's public pages. Each line says where it comes from.
ChatGPT
HebbiaWhat customers report
Results as the vendor or the customer published them, with the source and the date.
ChatGPT
No reviewed story for ChatGPT yet.
Hebbia
Analysts cut review times by up to 75% on various workflows
Oak Hill Advisors
Vendor case study, hebbia.com, captured Oct 4, 2026
Hebbia cut time-to-first-draft on core deliverables (management presentations, red-flag memos) by 40%.
Provident Healthcare Partners
Vendor case study, hebbia.com, captured Oct 4, 2026
Questions about ChatGPT and Hebbia
Which is used more, ChatGPT or Hebbia?
ChatGPT has more customers on usedby: 40 against 14 for Hebbia.
Do companies use both ChatGPT and Hebbia?
Yes. 1 company uses both on usedby, including Morgan Stanley.
Who uses ChatGPT?
40 companies on usedby, each with the public page that shows it. See who uses ChatGPT.
Who uses Hebbia?
14 companies on usedby, each with the public page that shows it. See who uses Hebbia.
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.