Pricing

Pay for coverage delivered — not seats, API calls, or guesswork

You're charged for net new lines of coverage added — tests that compile, pass, and strengthen your codebase. Nothing else.

Starting at

$1500

5,000
Net new lines of coverage added to your codebase
$0.30 / line
Effective cost per net new line of coverage

Book a demo

Talk to our team about larger packages

Everything included

Write tests for individual classes or methods
Batch mode processes entire repositories — no file-by-file prompting
Works on your existing AI platform
Extends GitHub Copilot CLI and Claude Code
Every test compiles, passes, and improves coverage
Built-in verification framework — you never review broken tests
Java and Python supported
Java 8, 11, 17, 21, 25 · Python 3.9+

How it works

See exactly what you're paying for

Net new lines of coverage added — a metric you can independently verify with any standard coverage tool.

We measure your baseline

Before Diffblue Testing Agent runs, we capture your existing code coverage. This is your starting point — the number we measure against.

Agent generates and verifies tests

Diffblue Testing Agent autonomously generates tests across your codebase. Every test is verified — it compiles, passes, and adds real coverage. Failed or flaky tests are never counted.

You pay for the difference

The difference between your baseline and your new coverage is your bill. Net new lines only.  You can confirm the number with JaCoCo, Cobertura, or any standard coverage tool.

Enterprise

Need to cover millions of lines?

For enterprise-scale deployments across multiple repositories, we build custom packages with volume pricing, dedicated support, and deployment options.

Custom enterprise packages

Volume pricing improves with scale. Dedicated technical support. SLA guarantees. On-premises deployment available for regulated industries.

Volume pricing
SSO / SAML
Dedicated support
On-prem available
SLA
Multi-repo

Talk to our team

Frequently asked questions

The details that matter

Have more questions? Contact our sales team

5,000 lines of real coverage. $1,500. Every test verified.

Start with one project. See the results. Expand when you’re ready.

Book a demo

Start free trial

Pricing

Pay for coverage delivered — not seats, API calls, or guesswork

Starting at

5,000

$0.30 / line

Everything included

Write tests for individual classes or methods

Works on your existing AI platform

Every test compiles, passes, and improves coverage

Java and Python supported

How it works

See exactly what you're paying for

We measure your baseline

Agent generates and verifies tests

You pay for the difference

Enterprise

Need to cover millions of lines?

Custom enterprise packages

Frequently asked questions

The details that matter

What if I need more than 5,000 lines?

What counts as a "net new line of coverage"?

What languages are supported?

Do I pay for my AI platform's API costs separately?

Is there a trial or free evaluation?

Which AI platforms are supported?

5,000 lines of real coverage. $1,500. Every test verified.

Pricing

Pay for coverage delivered — not seats, API calls, or guesswork

Starting at

5,000

$0.30 / line

Everything included

Write tests for individual classes or methods

Works on your existing AI platform

Every test compiles, passes, and improves coverage

Java and Python supported

How it works

See exactly what you're paying for

We measure your baseline

Agent generates and verifies tests

You pay for the difference

Enterprise

Need to cover millions of lines?

Custom enterprise packages

Frequently asked questions

The details that matter

What if I need more than 5,000 lines?

What counts as a "net new line of coverage"?

What languages are supported?

Do I pay for my AI platform's API costs separately?

Is there a trial or free evaluation?

Which AI platforms are supported?

5,000 lines of real coverage. $1,500. Every test verified.

5,000 lines of real coverage. $1,500. Every test verified.