Parloa vs Sierra: who uses which
Customers, public proof and the companies that use both.
On usedby, 36 companies use Parloa and 50 use Sierra. No company is listed with both yet. Parloa leads among the Insurance & InsurTech companies on usedby that use either tool, Sierra among the Fintech & Payments companies.Latest check Oct 7, 2026: 79 of 86 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 Parloa, Sierra, or both
Every company with a public proof for at least one of the two tools.
36
use only Parloa
0
companies use both
50
use only Sierra
36 companies use only Parloa, 50 use only Sierra and 0 use both, out of the 86 companies on usedby that use at least one of them.
Where it lands
Newest customers
No new customer since tracking started on October 3, 2026.
Where it lands
Newest customers
Who uses both
Companies with a confirmed or observed line on both tools.
By industry
Which tool the companies on usedby use, by industry. Shares of the companies on usedby that use Parloa, Sierra or both: a share of the companies on usedby, not of the market.
Parloa onlyBothSierra only
More common with Parloa
- Insurance & InsurTech7 of the 7 Insurance & InsurTech companies on usedby that use either tool use Parloa.
- IT Services & System Integration4 of the 5 IT Services & System Integration companies on usedby that use either tool use Parloa.
More common with Sierra
- Fintech & Payments5 of the 5 Fintech & Payments companies on usedby that use either tool use Sierra.
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.
ParloaSierraWhat customers report
Results as the vendor or the customer published them, with the source and the date.
Parloa
MAINGAU achieved its goal of an additional 20% automation rate within a short period of time
MAINGAU
Vendor case study, parloa.com, published May 13, 2026
AI-driven execution of up to 3 million calls per year
HSE
Vendor case study, parloa.com, published Jul 24, 2025
Sierra
Nearly 1,000 hours per month returned to exception handling and high-value work
RunBuggy
Vendor case study, sierra.ai, published Feb 3, 2026
Questions about Parloa and Sierra
Which is used more, Parloa or Sierra?
Sierra has more customers on usedby: 50 against 36 for Parloa. Parloa leads among the Insurance & InsurTech companies on usedby that use either tool, Sierra among the Fintech & Payments companies.
Do companies use both Parloa and Sierra?
usedby has not found a company with a confirmed or observed line on both Parloa and Sierra yet.
Who uses Parloa?
36 companies on usedby, each with the public page that shows it. See who uses Parloa.
Who uses Sierra?
50 companies on usedby, each with the public page that shows it. See who uses Sierra.
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.