Use Claude for the article and ChatGPT for Notes

After comparing both, one creator drafts long Substack articles in Claude and turns the finished piece into Notes with ChatGPT, because Notes fit that model better. Split the stack by job instead of forcing one tool to do everything. The tool used here is ChatGPT. Pricing listed for ChatGPT: Free; Plus $20/mo.

Done with CChatGPT

"Claude for the long-form article writing, ChatGPT for the visual and short-form stuff around it."timomason.substack.com

How do you do it, step by step?

1. After comparing both, one creator drafts long Substack articles in Claude and turns the finished piece into Notes with ChatGPT, because Notes fit that model better.
2. Split the stack by job instead of forcing one tool to do everything.
3. Copy the prompt on this page into ChatGPT and fill in your own details.
4. Edit the output in your own voice and check any facts before you publish.

Which tool does this use?

ChatGPT. See all ChatGPT use cases or more in Substack.

What does it cost?

Free; Plus $20/mo

What should you watch out for?

Features and prices change. Check the source below before you rely on it, and edit anything AI writes before you publish it.

You are an experienced Substack writer and growth editor.

Context:
- I write for [WHO YOU WRITE FOR] on [YOUR PLATFORM].
- My voice: [YOUR VOICE]
- My goal: [YOUR GOAL]

Task:
Here is my published Substack article. Write 5 Notes that promote it: two under 200 characters, three under 500. Each must stand alone, sound conversational, and point to the article without hype. Number them.

Material to work from:
[PASTE YOUR TEXT HERE]

Constraints:
- Avoid [WHAT TO AVOID].
- Use only facts I give you. Don't invent stats, quotes, names or examples. Write [NEEDS DETAIL] wherever something is missing.
- If something above is still in brackets or unclear, ask me about it before you start.

Output format:
Follow the counts and format given in the task. Plain text I can paste straight into [YOUR PLATFORM], numbered if there is more than one item.

Self-check before you answer:
- Did you follow every constraint and the output format?
- Does it sound like my voice and not generic AI writing? Cut filler openers and buzzwords.
- Is every claim backed by something I gave you, or marked [NEEDS DETAIL]?
Fix anything that fails, then give me the result.

Frequently asked questions

How do I use Claude for the article and ChatGPT for Notes?

After comparing both, one creator drafts long Substack articles in Claude and turns the finished piece into Notes with ChatGPT, because Notes fit that model better. Split the stack by job instead of forcing one tool to do everything. The tool used here is ChatGPT. Pricing listed for ChatGPT: Free; Plus $20/mo.

Which tool do I need for this, and what does it cost?

This use case uses ChatGPT. Pricing listed for it: Free; Plus $20/mo. Check chatgpt.com for current prices.

What prompt can I use?

You are an experienced Substack writer and growth editor. Context: - I write for [WHO YOU WRITE FOR] on [YOUR PLATFORM]. - My voice: [YOUR VOICE] - My goal: [YOUR GOAL] Task: Here is my published Substack article. Write 5 Notes that promote it: two under 200 characters, three under 500. Each must stand alone, sound conversational, and point to the article without hype. Number them. Material to work from: [PASTE YOUR TEXT HERE] Constraints: - Avoid [WHAT TO AVOID]. - Use only facts I give you. Don't invent stats, quotes, names or examples. Write [NEEDS DETAIL] wherever something is missing. - If something above is still in brackets or unclear, ask me about it before you start. Output format: Follow the counts and format given in the task. Plain text I can paste straight into [YOUR PLATFORM], numbered if there is more than one item. Self-check before you answer: - Did you follow every constraint and the output format? - Does it sound like my voice and not generic AI writing? Cut filler openers and buzzwords. - Is every claim backed by something I gave you, or marked [NEEDS DETAIL]? Fix anything that fails, then give me the result.

What are related use cases?

• Don't let AI pick what you write about (Claude)
• Find internal links from your own archive (Claude)
• Get past the Substack Notes dead zone (Claude)
• Write replies that add something instead of 'Great post!' (Claude)
• Most people never teach AI how they communicate (ChatGPT)
• Put platform, tone, audience, goal and length in every caption prompt (ChatGPT)

Where does this come from?

• https://timomason.substack.com/p/my-8-step-substack-writing-workflow
• https://help.openai.com/en/articles/6950777-what-is-chatgpt-plus

Checked Oct 16, 2026.