AI Developer Tools
A free suite of utilities designed for AI engineers. Debug prompts, optimize costs, and visualize RAG pipelines in real-time.
Token Calculator
Estimate text token usage and input cost before sending a model request.
JSON Formatter
Validate and pretty-print a JSON payload or compact it for copying.
RAG Chunk Visualizer
Explore how fixed-size chunks and overlap divide source text for retrieval.
LLM Cost Estimator
Compare an illustrative monthly API budget across model presets.
Image Gen Cost
Compare image-generation budgets using the tool's provider presets.
Embeddings Cost
Estimate embedding generation cost and compare stored vector-database plan examples.
Prompt Optimizer
Build a structured prompt from a task, role, and tone.
Prompt Library
Find reusable prompt templates for coding, writing, and analysis.
Model Leaderboard
Browse the historical model comparison snapshot displayed on this page.
Regex Generator
Copy example regular expressions for common extraction tasks.
Why use these AI Tools?
Optimization First
Understanding token usage is the first step to reducing API costs and latency. Our calculators use widely accepted standards.
Debug Faster
Don't let broken JSON or bad chunking ruin your RAG pipeline. Visualize your data flow before it hits the model.
Privacy Focused
All calculations happen client-side. We never send your prompts or data to our servers.