AWS Bedrock vs OpenAI API: who uses which
Customers, public proof and the companies that use both.
On usedby, 26 companies use AWS Bedrock and 5 use OpenAI API. No company is listed with both yet. AWS Bedrock leads among the Marketing Tech companies on usedby that use either tool.Latest check Oct 7, 2026: 25 of 31 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 AWS Bedrock, OpenAI API, or both
Every company with a public proof for at least one of the two tools.
26
use only AWS Bedrock
0
companies use both
5
use only OpenAI API
26 companies use only AWS Bedrock, 5 use only OpenAI API and 0 use both, out of the 31 companies on usedby that use at least one of them.
Where it lands
Newest customers
We have not started tracking changes for AWS Bedrock yet.
Where it lands
Newest customers
We have not started tracking changes for OpenAI API 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.
AWS Bedrock
OpenAI APIPricing, 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.
AWS Bedrock
Content rights management processes that previously required weeks of manual legal and licensing review now finish in minutes
Condé Nast
Vendor case study, aws.amazon.com, captured Oct 3, 2026
Reduce hardware development by 90% — from years to days, concept to printed part
Blue Origin
Vendor case study, aws.amazon.com, captured Oct 3, 2026
OpenAI API
No reviewed story for OpenAI API yet.
Questions about AWS Bedrock and OpenAI API
Which is used more, AWS Bedrock or OpenAI API?
AWS Bedrock has more customers on usedby: 26 against 5 for OpenAI API.
Do companies use both AWS Bedrock and OpenAI API?
usedby has not found a company with a confirmed or observed line on both AWS Bedrock and OpenAI API yet.
Who uses AWS Bedrock?
26 companies on usedby, each with the public page that shows it. See who uses AWS Bedrock.
Who uses OpenAI API?
5 companies on usedby, each with the public page that shows it. See who uses OpenAI API.
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.