Mike Yi
@Mike_Yi__
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AI/Excel tips | Tech humor 2X Founder | Sharing my startup Journey Building @CicelyAI.
Elements
Joined December 2025
@ezekiel_aleke One VLOOKUP and suddenly you're the entire finance department.
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I merged 20 PDFs, 3 Word docs, 3 CSVs, and 25 invoice screenshots into one clean Excel file. No copy-paste. No ChatGPT prompting. No code. Just dropped them in. Watch this 👇
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Are we seeing this because other domains are short in demand or supply? Never know until we find put
Software engineering makes up ~50% of agentic tool calls on our API, but we see emerging use in other industries. As the frontier of risk and autonomy expands, post-deployment monitoring becomes essential. We encourage other model developers to extend this research.
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Day 1: 26 spec documents. 9,320 lines. Zero code. Day 2: Implemented the entire front-end architecture. 57 files. 3,115 lines. 2 weeks of UI work done in 2 days. The trick wasn't working harder. It was making every decision before writing any code: https://t.co/rjnNs1soOB
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This week I wrote 2,000 lines of code across 14 commits for our Excel AI agent. None of it touches the UI. None of it makes the AI smarter. All of it makes the AI actually work. I wrote about why evals are the unsexy ceiling: https://t.co/qr1Yiviozo
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The pattern across all 10: Context beats cleverness. Paste real data. State your constraints. Describe what changed. Ask for tradeoffs, not just answers. But here's the thing. You shouldn't have to write a 200-word prompt every time you want AI to understand your spreadsheet.
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Prompt 10: The Formula-Based Pivot Table I have a dataset with columns: [list columns, e.g., 'Date, Department, Category, Amount, Status']. I need a pivot-table-style summary using formulas (not actual pivot tables) because: 1. My source data is updated by other team members
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Prompt 9: The Error Debugger I'm getting a [specific error, e.g., #REF!] in this formula:[Paste the exact formula] Context: 1. This formula is in cell [cell reference] on sheet [sheet name] 2. It references data on [other sheet name] in range [range] 3. The data range has [X]
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Prompt 8: The Financial Model Builder Build me a 12-month cashflow forecast model in Excel with the following specifications: Assumptions tab: 1. Starting cash balance: [amount] 2. Monthly revenue growth rate: [%] with seasonal adjustments (Q4 is 30% higher, Q1 is 15% lower) 3.
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Prompt 7: The Data Cleaner Here's a sample of my messy dataset (first 10 rows):[Paste actual sample data] Clean this data by doing the following in order: 1. Remove exact duplicate rows 2. Standardize all date columns to YYYY-MM-DD format (current data has mixed formats:
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Prompt 6: The Tab Consolidator I have an Excel workbook with 12 monthly tabs (Jan, Feb, Mar... Dec). Each tab has the identical layout: [Describe layout, e.g., 'Row 1: headers. Column A: Account Name. Columns B-D: Budget, Actual, Variance. Data starts in row 2 and varies in
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Prompt 5: The Multi-Criteria Lookup Master I need a lookup formula that pulls data based on multiple criteria.Source data is on Sheet2 with columns: [list columns, e.g., 'Region, Product, Quarter, Revenue'] I'm on Sheet1 and need to pull [target column, e.g., 'Revenue'] where:
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Prompt 4: The Finance Review Partner You are a senior financial analyst reviewing work before it goes to the CFO. Here is my P&L summary structure: [Paste your column headers and 2-3 sample rows] Review this and tell me: 1. Are there any common financial modeling errors in
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Prompt 3: The Reconciliation Engine I need to reconcile two datasets. File A: [describe structure, e.g., 'AP ledger with columns: Vendor Name, Invoice #, Amount, Date Posted'] File B: [describe structure, e.g., 'Bank statement with columns: Description, Transaction Amount,
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Prompt 2: The Workflow Auditor I'm a [your role] and here's my current weekly workflow for [task name]: Step 1: [describe what you do] Step 2: [describe what you do] Step 3: [describe what you do] (list all steps) For each step, tell me: 1. Can this be fully automated with
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Prompt 1: The Formula Builder I have a dataset in Excel with the following columns: [list your column names and what each contains]. I need a formula that returns [exact desired output] when [specific condition]. Requirements: 1. Handle blank cells without breaking 2. Return
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