Prompt Template Builder
Build a structured API request
// JSON will appear here
Token Counter & Cost Estimator
~4 chars/token · GPT-4o pricing
Embedding Similarity Calculator
Choose 2 words from hardcoded vocab
RAG Chunking Demo
See how text is split for RAG retrieval
Chain-of-Thought Formatter
Paste a problem → get a structured CoT prompt
// CoT prompt will appear here