AI-Powered Tool — Unit 14: Authentication & Access Control

Password Strength Analyzer

Type any password and get an instant breakdown of its strength — plus an AI explanation of exactly why it's weak or strong and how to improve it.

Powered by Claude Haiku
🔑
Setup Required — Anthropic API Key
Get an API key at console.anthropic.com (separate from your Claude Pro account — pay-as-you-go). Set a monthly spend limit in the console to avoid surprises — $5/month is more than enough for classroom use. Cost per request: ~$0.000002 using Claude Haiku — a full class period costs less than a penny.
Anthropic API Key Not connected
Your key is held in memory only — it is cleared when you close or refresh the page.
Password Analyzer passwords are never stored or transmitted
Password Strength —
Length
—
Charset Size
—
Entropy
—
Crack Time*
—
12+ characters
Uppercase letter
Lowercase letter
Number
Symbol
Not a common word
✦ AI analysis will appear here after you click Analyze
Gemini is analyzing
✦ Gemini Analysis claude-haiku-4-5
Try these examples to see the difference:
password Password1 P@ssw0rd! correct-horse-battery Tr0ub4dor&3 MyD0gIsN@med$pot2019
How This Works
1️⃣
LOCAL ANALYSIS
Length, charset, entropy, and checklist run instantly in your browser — no network call needed.
2️⃣
AI EXPLANATION
Clicking Analyze sends the password's characteristics (not the password itself) to Claude Haiku for a plain-English explanation.
3️⃣
PRIVACY FIRST
The actual password never leaves your browser. Only its length, charset, and entropy score are shared with the API.
4️⃣
COST
Claude Haiku costs ~$0.000002 per request. A full class period of 30 students costs less than a penny. Set a $5/month hard cap in the Anthropic console.