PromptSharp › Daily briefs › September 23, 2026

PromptSharp Daily · free web issue · #107

Prompt of the day

September 23, 2026 · the free cross-vertical sampler: get better at AI and prompting, and see the sharpest prompts from across the network. Today's comes from Personal Finance.

Investing BasicsFREE

Fund face-off: compare two funds on what actually matters, in plain English

You're choosing between two funds and the fact sheets are opaque. Compare them on cost, holdings, and fit — educational, not investment advice.

You are an investing educator (not my advisor) comparing two funds so I can understand the difference. I will paste the details.

Produce:

A) SIDE-BY-SIDE — a table: what each fund actually holds in plain terms, expense ratio, rough diversification, and how much they overlap.

B) COST OVER TIME — the 20-year compounding cost difference of the two expense ratios at a balance I give you. Show the math.

C) FIT QUESTIONS — the questions the choice really turns on (my timeline, what I already own, tax location), which the fund sheets can't answer.

D) ADVISOR PROMPTS — the 3 questions this comparison suggests I bring to a licensed professional.

Inputs: [FUND A DETAILS] · [FUND B DETAILS] · [ROUGH BALANCE I'D INVEST] · [MY TIMELINE + WHAT I ALREADY HOLD]

Rules: Do not invent expense ratios, returns, or holdings — use only what I paste and mark anything to 'verify on the fund page'. Do not tell me which to buy — this is an educational comparison and the decision is mine and a licensed professional's. Never include account numbers.

Why it works — Fund choices get made on brand or recent returns while the fee — the one input that reliably compounds against you — stays invisible; a side-by-side that surfaces overlap and shows the 20-year cost math makes the real difference legible — and the strict no-buy-signal, verify-the-numbers framing keeps it education the reader acts on, not advice from an unlicensed model.

Use AI today — a workflow to steal

WorkflowFREE

Use AI for the ugly first draft, you for the judgment

The blank page is the tax. AI removes it. Your value moves to editing and judgment — the part that's actually yours.

For any doc you're dreading, ask AI for a 'rough, structured first draft I can react to.' Reacting to a draft is far easier than facing a blank page.
  1. Give it the goal + your context block.
  2. Ask for a rough structured draft.
  3. Edit hard — keep 30%, rewrite the rest in your voice.

Sharpen it: For anything complex, break the ask into steps: outline first, then draft section by section. Big single asks produce shallow results; staged asks go deep.

Elsewhere in the network today

Two professional briefs and one personal brief, rotating daily — every one of them free to read right now.

Live · free daily issue

Consulting & Strategy

Today in Consulting & Strategy: Storyline first: build the pyramid before you build a single slide

Live · free daily issue

Product Management

Today in Product Management: Backlog stack-rank: RICE with an audit trail and a kill list

Live · free daily issue

Travel Planning

Today in Travel Planning: Pre-trip sweep: the things that end trips before they start

What changed in AI today

Opus 5.5, GPT 6 Sol and Luna launch; Trump renames AI at UN

Re-run your single most-repeated task on the newest model. Capability jumps quietly reset what's worth automating — the work that was 'too messy for AI' six months ago is often trivial now. Re-test,…

AI Agents Are Getting Paid in Tokenized Stocks

Read this as a signal, not a to-do. The operators who stay current — scanning 5 minutes a day — compound a real edge over peers who tune AI out until it's forced on them. File it, watch the trend,…

‘Lost in Translation’ in AI. Xi’s Visit, Meta’s Muse & Main Street. ARD #168

No action required today — but note it. The operators who keep a running map of where AI is moving spot the shift that touches their work weeks before the ones who wait to be told. Log it and move on.

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PromptSharp prompts are drafted with AI assistance and human-reviewed. They structure how a model reasons over data you provide — they do not source or verify facts for you, and you own every output. Nothing here is financial, legal, tax, or investment advice. Never paste confidential, client, or material non-public information into consumer AI tools; follow your employer's AI-use policy. © 2026 PromptSharp.