Free AI tools
Reading builds knowledge; doing builds skill. All 15 tools run right in your browser — no sign-up, nothing sent anywhere — and each one teaches a core AI skill by letting you practice it.
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The fundamentals, hands-on. If you're new to AI, these pair with the first steps of the learning path.
Prompt Builder
Fill in the four parts and watch a great prompt assemble itself — then copy it anywhere.
Teaches: The Role–Task–Context–Format anatomy behind every strong prompt.
Open toolPrompt Grader
Paste any prompt and get an instant checklist score — with a specific fix for every gap.
Teaches: Diagnosing why an AI answer disappointed, before you hit send.
Open toolToken Counter
Paste text, see how many tokens it is, and watch it fill four real context windows.
Teaches: What tokens and context windows actually mean for your chats.
Open toolAI Tool Picker
Answer four quick questions and get a personal recommendation: Claude, ChatGPT, Gemini, or Copilot.
Teaches: How to choose your first AI by ecosystem, use case, and privacy needs.
Open toolGlossary Flashcards
Flip through the AI glossary as flashcards — sort each one into "got it" or "still learning."
Teaches: The vocabulary — LLM, token, hallucination, RAG — until it sticks.
Open toolSpot the Better Prompt
Five real scenarios, two prompts each — can you tell which one gets the better answer?
Teaches: The instinct for specific-beats-vague, one scenario at a time.
Open toolAI Scam Radar
Scam or legit? Train your instincts on 9 real-world situations — voice clones, deepfakes, phishing, and the legit messages in between.
Teaches: The scam patterns that never change, even when AI makes the fakes perfect.
Open toolAI Use-Case Finder
Pick your role — student, office worker, business owner, parent — and browse concrete things AI can do for you today, each with a copyable starter ask.
Teaches: Where AI actually fits into your week — not in theory, in your actual tasks.
Open toolLevel up
For when the basics feel easy: reusable system prompts, prompt iteration, how agents think, and what building with AI costs.
Next-Word Machine
Be the sampler: watch a real probability distribution over next words, turn the temperature dial, and build a sentence the way an LLM does.
Teaches: The core mechanism inside every LLM — next-word prediction and temperature — with real math.
Open toolRAG Explorer
Ask a toy employee handbook a question and watch retrieval happen live — scoring, top-3 chunks, and a grounded, citable answer.
Teaches: How "chat with your PDF" works under the hood, and why RAG answers hallucinate less.
Open toolSystem Prompt Architect
Design a reusable system prompt — identity, rules, format, examples, guardrails — with a live preview.
Teaches: Turning one-off prompting into a standing assistant: Claude Projects, custom instructions, Gems.
Open toolPrompt A/B Lab
Put two prompt versions head to head: scores, token counts, and a word-level diff of what changed.
Teaches: The iterate-and-compare habit that separates casual users from power users.
Open toolAgent Loop Simulator
Step through a real agentic loop — plan, act, observe, verify — and watch guardrails fire.
Teaches: How AI agents actually work, one decision at a time, before you build or trust one.
Open toolApp Architect
From idea to full blueprint: answer four steps and get an architecture diagram, stack, build roadmap, security checklist, hosting plan, and app-store guide.
Teaches: How real apps are put together — and how to hand a complete plan to an AI coding assistant.
Open toolAPI Cost Calculator
Model your monthly AI API bill — editable prices, caching and batch levers, peso conversion.
Teaches: What building with AI actually costs, and the two levers that cut the bill in half.
Open toolTools are the gym. Guides are the coach.
Every tool here pairs with a guide that explains the thinking behind it. If a tool surprises you, the matching guide is the fastest way to understand why.
Browse the learning path →