AI Developer Tools
Calculate costs, optimize embeddings, and build better AI apps
Privacy-first tools that run entirely in your browser
🔢 Token Calculator
Calculate OpenAI API costs and token usage for GPT models
📊 Vector Similarity
Compare embeddings with cosine similarity and distance metrics
🧩 RAG Chunking
Optimize text splitting for vector databases and embeddings
Why AI Developers Choose JSONLab
💰 Cost Optimization
Calculate exact API costs before deployment
🔒 Privacy First
All calculations happen locally in your browser
âš¡ Instant Results
No API calls needed - works offline