Using ChatGPT and Claude together, without repeating yourself
Many people use more than one AI: one to draft, one to think, one to write code. The tools are different. Your work is the same. This page shows what gets lost when you switch, and how to keep one source that both can read.
Two tools, one source
- ChatGPTYour question, the same facts
- ClaudeYour question, the same facts
In short
- Using several AI tools is normal. Losing context between them is the cost.
- Keep goals, voice, product facts and decisions in one place you control.
- Point every tool at that place instead of pasting the same text into each.
The habit
Why people use more than one AI
Tools differ in what they are good at, how they write, and how they work with files and code. People mix them, and many teams use whichever tool suits the task.
There is nothing wrong with that. The trouble starts at the handover from one tool to the next.
The cost
What goes wrong when you switch
You start again
The new tool does not know your offer, your audience or what you decided last week.
The tone drifts
Each tool guesses your voice from a few examples, and the guesses differ.
Facts disagree
One tool has the old price, another the new one. Neither knows which is right.
A simple routine
Keep one source and point every tool at it
Write down what stays true
Goals, voice, product facts, limits and decisions. Short and current.
Mark what is approved
Only approved material should guide an AI. Drafts and half-ideas should not.
Give every tool the same access
Paste it, attach it, or connect the tool to the source, but use the same version everywhere.
Review what comes back
Check results against the source, and update the source when a decision changes.
What belongs in it
What to keep in the shared source
Goals
What you are trying to achieve, and what done looks like.
Voice and brand
How it should sound, and what it should never say.
Product facts
What you offer, for whom, and at what price.
Decisions
What you have settled, so no tool reopens it.
Limits
What must not be shared or changed.
VisionBoard
Where VisionBoard fits
You can do this by hand with a document. It works until the document goes stale or the copies multiply.
VisionBoard keeps the source as an approved, versioned Direction. ChatGPT (from the plugin marketplace), Claude, Codex and other tools that support MCP can connect and read the version you approved. What they save comes back as Drafts with their names on them. Which tools work today is listed on the Connect AI page.
Useful questions.
Can I use ChatGPT and Claude on the same project?
Yes. Give both the same source of truth and compare what they produce. Keeping that source in one place means a change reaches both.
Do I need to paste my context into every chat?
Not if the tool can connect to a source. Connected tools read the approved Direction themselves, and you can keep pasting for tools that cannot connect.
Is one assistant better than the other?
It depends on the task, and the answer changes as the tools change. This page is about using more than one, whichever you prefer.
One source
Give every AI
the same direction.
One active Vision free. No credit card required.
Claude, ChatGPT, Gemini, Codex and Obsidian are trademarks of their respective owners.