LlamaIndex vs Rossum: who uses which
Customers, public proof and the companies that use both.
On usedby, 48 companies use LlamaIndex and 41 use Rossum. No company is listed with both yet.Latest check Oct 8, 2026: 89 of 89 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 LlamaIndex, Rossum, or both
Every company with a public proof for at least one of the two tools.
48
use only LlamaIndex
0
companies use both
41
use only Rossum
48 companies use only LlamaIndex, 41 use only Rossum and 0 use both, out of the 89 companies on usedby that use at least one of them.
Where it lands
Newest customers
No new customer since tracking started on October 7, 2026.
Where it lands
Newest customers
No new customer since tracking started on October 8, 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.
LlamaIndex
RossumWhat customers report
Results as the vendor or the customer published them, with the source and the date.
LlamaIndex
Lyzr's annual recurring revenue jumped from around $100,000 to about $1.5 million in less than 60 days.
Lyzr AI
Vendor case study, llamaindex.ai, captured Oct 7, 2026
20% increase in digital lead to sales conversion
GymNation
Vendor case study, llamaindex.ai, captured Oct 7, 2026
Rossum
faktur:digital saves 79% of its time on document processing for its clients with Rossum
faktur:digital
Vendor case study, rossum.ai, published Sep 14, 2022
Kros can now save its clients 93% of the time previously needed to process high volumes of documents
Kros
Vendor case study, rossum.ai, published Aug 16, 2022
Questions about LlamaIndex and Rossum
Which is used more, LlamaIndex or Rossum?
LlamaIndex has more customers on usedby: 48 against 41 for Rossum.
Do companies use both LlamaIndex and Rossum?
usedby has not found a company with a confirmed or observed line on both LlamaIndex and Rossum yet.
Who uses LlamaIndex?
48 companies on usedby, each with the public page that shows it. See who uses LlamaIndex.
Who uses Rossum?
41 companies on usedby, each with the public page that shows it. See who uses Rossum.
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.