Build for the Agentic Era.
Premium tools and deep-dive engineering notes for the next generation of AI developers and Architects.
AI Developer Toolkit
View All 🛠️AI Token Counter
Count tokens for GPT-4, Claude, Llama, and other models. Essential for prompt optimization.
Prompt Builder
Craft optimized prompts with templates, variables, and best-practice patterns.
RAG Text Splitter
Visualize text chunking and overlap for RAG applications. Optimize your context windows.
OpenAI Schema Gen.
Visual builder for OpenAI function calling JSON schemas. No coding required.
AI Cost Calculator
Estimate API costs for GPT-4, Claude, Gemini and compare pricing across models.
System Prompt Library
Curated collection of ready-to-use system prompts for coding, writing, and analysis.
Latest Engineering Notes
Browse All 📝How AI Token Counting Works: A Complete Developer Guide
Everything you need to know about tokens, tokenization algorithms, and why understanding them will save you money.
MCP vs. Function Calling: Understanding the Difference
Confused about how MCP differs from traditional tool-use? We break down the "Push vs. Pull" model and why discovery is the game changer.
The Rise of Vibe Coding: Why English is the New Syntax
Andrej Karpathy says "the hottest new programming language is English." Welcome to the era of Vibe Coding—where intent and iteration matter more than semicolons.