Ship Better Chatbots
Chatbot Testing & Evaluation with PromptLens
Automatically test every prompt change against your quality standards. Prevent embarrassing chatbot failures in production.
Start Testing FreeHow PromptLens Helps
Catch Tone Regressions
Detect when your chatbot's personality shifts unexpectedly. Ensure consistent brand voice across all interactions.
Validate Response Accuracy
Test that your bot gives correct answers to common questions. Flag incorrect or outdated information automatically.
Test Edge Cases
Build datasets for tricky scenarios. Ensure your bot handles unusual requests gracefully.
Compare Model Performance
Test the same prompts across GPT-4, Claude, and Gemini. Find the best model for your use case.
Key Features
- Multi-turn conversation testing
- Sentiment and tone analysis
- Response time benchmarking
- A/B prompt comparison
- Automated regression detection
“PromptLens caught a critical tone regression before our product launch. Our support bot was suddenly being curt with customers.”— Product Manager, SaaS Company
Start Testing Your Ship Better Chatbots
Set up your first regression test in minutes. Catch issues before they reach your users.
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