Abacus.AI vs C3 AI: who uses which
Customers, public proof and the companies that use both.
On usedby, 17 companies use Abacus.AI and 35 use C3 AI. No company is listed with both yet.Latest check Oct 8, 2026: 52 of 52 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 Abacus.AI, C3 AI, or both
Every company with a public proof for at least one of the two tools.
17
use only Abacus.AI
0
companies use both
35
use only C3 AI
17 companies use only Abacus.AI, 35 use only C3 AI and 0 use both, out of the 52 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
We have not started tracking changes for C3 AI yet.
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.
Abacus.AI
C3 AIPricing, security and data residency are not checked yet. usedby adds them from each vendor's public pages, with the date of the check.
What customers report
Results as the vendor or the customer published them, with the source and the date.
Abacus.AI
No reviewed story for Abacus.AI yet.
C3 AI
99% reduction in the time to generate threat data, from weeks to minutes
Missile Defense Agency
Vendor case study, c3.ai, captured Oct 8, 2026
Questions about Abacus.AI and C3 AI
Which is used more, Abacus.AI or C3 AI?
C3 AI has more customers on usedby: 35 against 17 for Abacus.AI.
Do companies use both Abacus.AI and C3 AI?
usedby has not found a company with a confirmed or observed line on both Abacus.AI and C3 AI yet.
Who uses Abacus.AI?
17 companies on usedby, each with the public page that shows it. See who uses Abacus.AI.
Who uses C3 AI?
35 companies on usedby, each with the public page that shows it. See who uses C3 AI.
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.