PromptLab Pro
A research-grade platform for evaluating LLM prompts using measurable metrics.
PromptLab was built to solve a core problem in prompt engineering — inconsistency. The same prompt can produce different outputs across runs, making evaluation unreliable.
This system replaces intuition with structured evaluation using metrics like determinism, similarity, and instruction adherence. It enables systematic testing of prompts under controlled conditions.
Key Capabilities
- • Multi-run variability analysis
- • Temperature sweep testing
- • Prompt A/B comparison
- • Determinism Index (DI)
- • Hallucination risk detection
Tech Stack
Python · Streamlit · OpenRouter · TF-IDF · LLM APIs