1
Aqueduct, Inc.
United States
ApiOverflow uses cutting edge generative AI technology to learn how to use APIs and convert your questions into usable code.
- Revenue
- $8.5M
Top 28 API Generation Software Companies (August 2026)
As of August 2026, Latka tracks 28 API generation software companies. They have combined revenues of $64.2M and employ 605 people. They have raised $22.3M.
Every company below sells API generation software to other businesses and is ranked by its most recent annual revenue. Revenue, funding, headcount and customer figures come from CEO interviews on the Latka podcast, public company filings, and Latka estimates where a company has not disclosed a number.
- Companies
- 28
- Revenue
- $64.2M
- Funding
- $22.3M
- Employees
- 605
Filters
Sorting: Highest -> Lowest
Top API Generation Software Companies by revenue
Showing 6 of 6 companies ranked by annual revenue.
2
Ozone API
London, England, United Kingdom
Ozone API is the leading standards based platform that handles the complexity of open banking, making it easy for any financial institution to meet both regulatory and commercial requirements for an open API. Banks using the Ozone API can accelerate their implementation of open APIs, and bring new commercial services to market ahead of the competition.
- Revenue
- $7.2M
- Year founded
- 2017
- Team size
- 65
3
Buf
Toronto, Ontario, Canada
The Protobuf developer platform Accelerate API development with Buf, the only end-to-end developer platform for Protocol Buffers, gRPC, and Kafka.
- Revenue
- $5.4M
- Team size
- 49
4
APIMatic
Auckland, New Zealand
Provider of a developer experience platform intended to make developers productive through automatic code generation. The company's platform offers an automatic software development kit generator for stack development and application delivery of APIs, enabling API providers to generate SDKs for their APIs within minutes and at a fraction of the cost.
- Revenue
- $5.1M
- Year founded
- 2014
- Team size
- 38
5
Stainless
New York, New York, United States
Stainless is a company that specializes in generating software development kits for APIs.
- Revenue
- $5.1M
- Year founded
- 2022
- Team size
- 64
6
Gram by Speakeasy
San Francisco, California, United States
Speakeasy is a platform that provides developers with the tools they need to craft exceptional API experiences. You can use Speakeasy to generate SDKs, build MCP servers, create Terraform providers and automate documentation.
- Revenue
- $5.1M
- Year founded
- 2022
- Team size
- 46
Frequently asked questions about API Generation Software Companies
How many API generation software companies are there?
Latka tracks 28 API generation software companies with reported revenue. Together they generate $64.2M in annual revenue and employ 605 people.
Which API generation software company is the largest?
Aqueduct, Inc. is the largest, with $8.5M in annual revenue.
How much revenue does a typical API generation software company make?
The average API generation software company in this list makes $2.3M a year, across 28 companies with reported revenue.
Who are the leading API Generation software vendors?
Ranked by annual revenue, the leaders are Aqueduct, Inc., Ozone API, Buf, APIMatic and Stainless.
How much funding have API generation software companies raised?
The 28 API generation software companies tracked here have raised $22.3M in disclosed funding between them.