AI Development Tools
Free online tools for AI developers: token counter with visual analysis, prompt template builder with variables, and more. All client-side, privacy-first.
Token Counter
Count & visualize AI tokens
Prompt Builder
Build & test AI prompt templates
About AI Development Tools
Building with LLMs means constantly managing tokens, iterating on prompts, and preparing training data. These tools are built specifically for AI developers: count and analyze tokens instantly, build and test prompt templates with variables, and validate fine-tuning datasets — all without sending your data to any server. Everything runs in your browser, making these tools safe for proprietary prompts and sensitive training data.