Automated regression testing for AI prompts. Detect breaking changes, run A/B tests, and integrate with CI/CD.
No credit card required • Setup in 5 minutes
Teams are shipping AI features without proper testing, leading to regressions and wasted resources.
You change a prompt to improve one scenario, but break 10 others. No visibility into downstream effects.
Prompt changes go to production without automated tests. Regressions are discovered by angry customers.
Teams spend hours manually comparing outputs. No metrics, no consistency, no confidence.
Your code has tests, but your prompts don't. A single prompt change can break your entire AI feature.
PromptRegression gives you the same confidence in your AI prompts as you have in your code.
Automated Test Suites
Define test scenarios once, run them automatically on every prompt change.
Instant Regression Detection
Compare new outputs against baselines. Get alerts before you ship.
CI/CD Integration
Test prompts in your pipeline with GitHub Actions. Block broken changes.
Multi-Model Testing
Compare GPT-4, Claude, and Llama side-by-side in a single test suite.
Everything you need to build reliable, scalable AI applications
Compare new prompt versions against baselines with configurable thresholds. Detect quality drops instantly.
Run multiple prompt versions in parallel. Compare quality, cost, and latency to find the optimal configuration.
Native GitHub Actions integration. Run tests in your pipeline, post results to PRs, block broken changes.
Test the same scenarios across GPT-4, Claude, Llama, and more. Find the best model for each use case.
Get started in 3 simple steps
Create test cases that cover your edge cases, happy paths, and critical user flows. Use our CLI or web UI.
Execute tests manually or automatically in CI/CD. Compare outputs across prompt versions and models.
Review regression alerts, A/B test results, and quality metrics. Deploy only when you're confident.
Start free, scale as you grow. No hidden fees.
Perfect for getting started
For individual developers
For growing teams
For organizations
Compare with LangSmith and see why teams switch to us
| Feature | PromptRegression | LangSmith |
|---|---|---|
| Prompt Testing | ||
| Regression Detection | ||
| A/B Testing | ||
| CI/CD Integration | Limited | |
| Pricing | $29-$299 | $499+ |
| Free Tier | ||
| Multi-Model Support |
Everything you need to know about PromptRegression
Start testing your LLM prompts in 5 minutes. No credit card required.