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Diffblue logo — Autonomous AI Agent for Java software testing.

Diffblue

Autonomous AI Agent for Java software testing.

Founded 2016 United Kingdom Oxford, United Kingdom 20 employees Series A Total: $70.52M AI, Developer Tools

General Information

Company Name Diffblue
Founded Year 2016
Location United Kingdom Oxford, United Kingdom +1
Founders / Decision Makers
Team member
Employees 20
Industries AI, Developer Tools
Funding Stage Series A
Social

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About Diffblue

Diffblue, founded in 2016, is pioneering autonomous AI in the realm of Java software testing through its flagship product, Diffblue Cover. This cutting-edge tool targets the intricate process of unit testing by leveraging AI to automate the generation, maintenance, and management of Java unit tests. This allows developers to concentrate on creating high-quality code while the AI handles testing.

The company's performance metrics are compelling, with Diffblue Cover reportedly functioning 10x faster than GitHub Copilot and up to 250x faster than manual test writing, offering a 26x productivity boost compared to traditional coding assistants. This technological advantage is crucial for addressing key industry needs such as legacy code modernization, code coverage enhancement, and continuous testing, aligning well with DevOps strategies.

Headquartered in the United Kingdom and operating within the AI and developer tools sector, Diffblue recently secured a $3.20M Series A investment, highlighting investor confidence in its growth potential and market impact.

Taxonomy: Autonomous Software Testing, Java Unit Testing, AI-driven Development, Legacy Code Modernization, Code Coverage Enhancement, Cloud Migration Support, Regression Testing Automation, Continuous Integration, DevOps Optimization, Reinforcement Learning, Software Development Acceleration, Automated Code Generation, AI Research Spin-out, Software Testing Innovation, Productivity Boost

Services & Products

Automated regression unit test generation
Comprehensive test coverage creation
AI orchestration for testing
Project-level scale test generation

Target Customers

Financial Services Companies Defense Contractors Healthcare Companies Enterprises using AI coding platforms Organizations with stringent security requirements

Funding Rounds & Investors (8)

View All
Funding Stage Amount Investors Lead Investors Date
Series A •••••• - 01 Nov 2025
Grant •••••• - 01 Mar 2025
Early VC •••••• 5
Investor Investor Investor Investor
•••• •••• 		01 Oct 2024
Early VC •••••• 1
Investor
01 Dec 2023
Early VC •••••• 6
Investor Investor Investor Investor Investor Investor
01 Nov 2022

View All 8 Funding Rounds

Latest News

View All
Oxford-based Diffblue secures €5.8 million to fuel momentum for generative AI-for-code — Eu-startups
Oxford-based Diffblue secures €5.8 million to fuel momentum for generative AI-for-code
Eu-startups Nov 01, 2024
SaaS-for-developers Diffblue Secures £1M grant from Innovate UK — Tech
SaaS-for-developers Diffblue Secures £1M grant from Innovate UK
Tech Mar 31, 2025

Diffblue Alternatives & Competitors

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Diffblue vs
Hexawise
Hexawise United States

Test smarter, not harder.

4 employees
IT, Information Technology
Diffblue vs
TRUSTiiN
TRUSTiiN Canada

Power the future of Test Automation

8 employees
Information Technology, Internet
Diffblue vs
ContextQA
ContextQA United States

Deliver Quality Software and Test effortlessly with Low-code | No-code | Pro-code

Non Equity Assistance
43 employees
AI, B2B
View all alternatives

FAQ About Diffblue

Autonomous AI Agent for Java software testing.
Diffblue was founded in 2016.
Diffblue is headquartered in Oxford, United Kingdom.
Diffblue operates in the following industries: AI, Developer Tools.
Diffblue has approximately 20 employees.
Diffblue has completed 8 funding rounds, raising a total of $70.52M. The latest funding stage is Series A.
Diffblue offers: Automated regression unit test generation, Comprehensive test coverage creation, AI orchestration for testing, Project-level scale test generation.
Top alternatives and competitors to Diffblue include Hexawise, TRUSTiiN, ContextQA, Katalon, Landbot. These companies operate in related industries and serve comparable markets. You can compare them side by side on Bounce Watch.
Diffblue and Hexawise are both companies in similar industries. Compare their funding, team size, growth signals, and market position on Bounce Watch to see which one fits your needs.

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