Test & Optimize Your System Prompts
Use AI to generate responses and test them across multiple models to analyze how your system prompts performs.
Powerful Features for Prompt Testing
Everything you need to test, analyze, and optimize your AI system prompts in one place.
Automated Testing
Generate and test potential user interactions based on your system prompt.
Response Comparisons
Compare and analyze responses across different prompt variations.
Performance Metrics
Track response quality, consistency, and performance metrics.
Simple Pricing
Access all features by bringing your own API key
Bring Your Own API Key
Free
Get access to all features by using your own API keys from:
- OpenAI API Key
- Anthropic API Key
- Google AI API Key
- Unlimited tests and comparisons
No credit card required. Just bring your API keys.
Ready to Optimize Your AI Prompts?
Join other engineers who are already using Prompt Test Lab to build better AI systems.