MUFG gives all 35,000 bank staff ChatGPT Enterprise
In plain words
Mitsubishi UFJ deployed ChatGPT Enterprise to about 35,000 employees as part of co-creation with OpenAI.
What happened: All of its roughly 35,000 staff now have ChatGPT Enterprise.
Source: itmedia.co.jp ↗
How to do it yourself
Our suggested steps. The company didn't publish theirs.
- 1
Buy ChatGPT Team for staff and turn off training on your data (default for Team).
- 2
Write 10 starter prompts for your business (emails, summaries, translations, reports).
- 3
Share them as a pinned doc or as shared GPTs.
- 4
Run a 30-minute kickoff and a monthly 'best prompt' share.
- 5
Track weekly active users and ask for time-saved estimates.
The instructions to give the AI
Paste this into ChatGPT (the free plan is fine), swap the [brackets] for your details, and test it on a few real examples.
Agent instructions (prompt)
Turn my rough notes into a professional email to [recipient] at [company]. Tone: [polite/firm]. Language: [English/Japanese]. Include: [key points]. Keep under 150 words and end with a clear next step. Notes: [paste]
[Highlighted] = replace with your own details before you run it.
What you should get back: A clean, polite email to your client in the tone and language you chose, ready to send.
Written by Quickly and Good, inspired by this case.
More detail: tools, prices and what you'll need
The company used: ChatGPT Enterprise
You could use: ChatGPT Team/Business + a short internal prompt library
- ChatGPT
General AI assistant: writes, summarises and answers from files you give it.
Free plan; paid plans available · Official site ↗
Prices from each tool's own pricing page, checked Oct 2026.
What you'll need
- ☐A ChatGPT or Claude account
- ☐Your own documents, templates or examples
- ☐The agent instructions (prompt)
- ☐A habit of checking every output before you use it
Can I do this myself?
Yes. You can try this today with a chat assistant and your own files.
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