SHIP WITH CONFIDENCE

Instantly Validate
AI-GenerateD COde
from your IDE

Kerno automates integration testing helping you validate the behaviour of every code change before you commit.

Apply for Beta
LIMITED BETA ACCESS | BETA IS FREE UNTIL END OF NOVEMBER
TRUSTED BY AI NATIVE TEAMS

KERNO UNDERSTANDS YOUR CODE, DEPENDENCIES AND BUSINESS LOGIC TO CREATE AND EXECUTE QUALITY TESTS, RELIABLY,  AT SCALE.

01
FULL CONTEXT

Kerno creates a detailed graph mapping every piece of code, dependency and business logic to understand how everything fits together.

10+ Backend Languages Supported
02
DEEP COVERAGE

Our AI engine generates a high quality exhaustive test suite that covers every user flow and edge case.

03
AUTONOMOUS TESTING

When you make a code change, Kerno autonomously spins up real dependencies, runs, and updates tests, and detects behavioural and logical changes in your app.

Supports 30+ dependencies
04
INSTANT RESULTS

Kerno compiles all the changes across all edge cases into a human readable file that you can review in a few seconds inside your IDE, and create your PR if everything looks good.

Works in your favorite IDE

Review Uncommitted Changes

Get immediate feedback on your code including staged and unstaged commits without waiting for PR to be raised.

One-Click Testing

Run tests on-demand in a single click without manually spinning up test env, complex dependencies, or mocking data.

Fix with AI

Kerno hands off both the test results and and deep context it generates to your AI agent so you can quickly fix your code.

KERNO HELPS YOU BUILD TRUST IN AI CODE GEN AND ACCELERATES YOUR AI CODING WORKFLOW

Plans
Focus
Automated backend integration testing
General AI coding assistant that can write tests
Test Generation
Automated
Detects endpoints, database schemas, and dependencies, then generates runnable integration tests automatically
Manual
Can generate test files through LLM completions, but requires explicit back and forth prompting
Test Execution
Built-in
Runs tests automatically in isolated environments with containers, seeded data, and teardown logic
External
No built-in execution layer; relies on user-managed test frameworks
Environment setup
Automated
Automatically provisions Postgres, Redis, or other dependencies through Docker Compose
Manual
Developer must configure all dependencies manually
Test maintenance
Automated
Tracks API, schema, and config changes, then self heals or adds/removes affected tests
Manual
No automatic maintenance; generated tests must be manually updated
Change Intelligence
Built-in
Compares baseline and head commits to identify regressions
None
No regression comparison or state tracking
Reliability
Built-in
Deterministic guardrails ensure tests always run successfully out of the box
None
Quality depends on prompt phrasing and LLM randomness

WELCOME TO THE NEW ERA OF AI NATIVE BACKEND TESTING

Free Up Engineers

Never Manually Write, Run, or Maintain Tests

Kerno fully automates the testing workflow, from generation to execution to maintenance, so developers never waste time writing or fixing boilerplate tests.

Ensure Consistency

Keep Everything in Sync. Always. Effortlessly.

As your codebase evolves, Kerno continuously updates test files, eliminating the overhead of test upkeep and ensuring your suite never drifts out of sync.

Tighten Feedback Loops

Get Signals in Seconds Not Hours Inside your IDE

Kerno brings testing directly into the IDE, giving developers feedback in minutes while they're in flow. No more waiting on CI pipelines.

Built on Solid Foundations

PLUG AND PLAY AT ANY SCALE

Kerno is engineered to be lightweight, secure and fast to run.

Bring your own AI API key

Connect your own LLM providers, OpenAI, Anthropic, or Gemini, and keep full control over your data privacy and AI Infra.

Run lightning fast tests at scale

Kerno parallelized test runs across a cluster of isolated sandboxes to run 100s of tests and return results in under 100 seconds
PRICING

SIMPLE, FAIR, AND TRANSPARANT PRICING

PRO

$25/Active Dev / Month

Ideal for startups looking to drastically increase the speed at which they ship regression-free code
Apply for Beta Access
ENTERPRISE

Custom

Ideal for large companies requiring enterprise-grade infrastructure and support.
Talk to a Founder

FREQUENTLY ASKED QUESTIONS

Got more questions? Drop us a message in our community Slack — we’re happy to help.

What is Kerno?
What makes Kerno different from other tools?
Does Kerno support my programming language?
Does Kerno store my code?
Does Kerno use my code for training LLMs?
Are there discounts available for startups?
TRY KERNO NOW
Apply for Beta
LIMITED ACCESS | BETA IS FREE UNTIL END OF NOVEMBER
© 2025 FYCK Limited. All Rights Reserved
AboutCareersBlogContact UsKerno Vs Cursor
Terms of ServicePrivacy Policy