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skills / data

data-storytelling

what it does

Transform data into compelling narratives using visualization, context, and persuasive structure. Use when presenting analytics to stakeholders, creating data reports, or building executive presentations.

by Seth Hobson · Seth Hobson, MIT · version 1 · license MIT

Verified Before and after: 2 models 1 try per case View source Download .zip

Compare the answers

Answers from Claude Sonnet 5.5 and GPT-6.1 Sol · try 1 of 1

Same request, same model, once with the skill and once without. Read both and judge for yourself.

“My slide titles are boring. Can you rewrite them so each one says what the slide shows?”

Source material given with the request

Slide 1 title: "Website Traffic Q3" Data: sessions 182,000 in Q2 -> 241,000 in Q3 Slide 2 title: "Conversion Rates" Data: trial-to-paid 11.8% in Q2 -> 9.2% in Q3 Slide 3 title: "Support Metrics" Data: CSAT 91% -> 93%; median first response 3.1 h -> 1.4 h Slide 4 title: "Pricing Test" Data: annual-plan uptake 18% (control) vs 27% (2 months free on annual)

with the skill

1. **Website sessions grew 32% in Q3, reaching 241,000** 2. **Trial-to-paid conversion fell from 11.8% to 9.2% in Q3** 3. **Support responses were 55% faster as CSAT rose to 93%** 4. **Annual-plan uptake was 27% with two months free vs. 18% in control**

without

1. **Website sessions grew 32% in Q3, from 182,000 to 241,000** 2. **Trial-to-paid conversion fell from 11.8% to 9.2% in Q3** 3. **CSAT rose from 91% to 93% as median first response time fell from 3.1 to 1.4 hours** 4. **Annual-plan uptake reached 27% with two months free, versus 18% in the control group**

Answers are shown exactly as the model wrote them, from the first try, and nothing is picked by hand.

The models

2 models

Claude Sonnet 5.5

made by Anthropic

claude-sonnet-5-5 · revision not reported by the provider

1 try per case · tested 3 Nov 2026

GPT-6.1 Sol

made by OpenAI

gpt-6.1-sol · revision not reported by the provider

1 try per case · tested 3 Nov 2026

The tasks

written by Carte Blanche

allhands-nps-not-comparable

“Draft the three slides for Friday's all-hands about our jump in customer satisfaction.”

board-story-opt-in-feature

“I'm presenting this to the board on Thursday. Can you make the story more compelling?”

ceo-update-segment-split

“Turn this into a short update for our CEO.”

chart-for-channel-mix

“I need one chart for the board deck showing how our signup mix shifted this year. What chart should I make and how should I set it up?”

slide-titles-takeaways

“My slide titles are boring. Can you rewrite them so each one says what the slide shows?”

Install

Download the .zip and unzip it. Put its files, in a folder named data-storytelling, here:

Claude Code~/.claude/skills/Every project. For one project only, use .claude/skills/ inside it.

Codex~/.agents/skills/Every project. For one repository only, use .agents/skills/ inside it.

Cursor~/.cursor/skills/Cursor also reads the Claude Code and Codex folders above.

Then start a new session and ask for what the skill does. Other agents that read SKILL.md have their own skills folder; check their docs.

Coming after launch: get skills from inside your agent, no download needed.