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SQL Window Functions
RANK, DENSE_RANK, running totals
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A/B Test Analysis
Statistical significance, p-values
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Funnel Drop-off
Diagnose & fix conversion issues
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Data Cleaning (Python)
Pandas, missing data, outliers
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Claude · claude-sonnet-4-20250514
API KEYS
Add your API keys to use different AI models. Keys are stored only in your browser's localStorage — never sent to any server except the AI provider's API.
CLAUDE
Anthropic API Key
Model:
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CHATGPT
OpenAI API Key
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GEMINI
Google AI API Key
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🔒 Keys are saved in your browser's localStorage and are never shared. Get keys from: Claude: console.anthropic.com ·
ChatGPT: platform.openai.com ·
Gemini: aistudio.google.com