The wordsmith
Toasts, hard emails, anything with a human on the other end — some models just write better.
Mobile app coming soon — your whole workspace in your pocket.Join the waitlist
One workspace · every AI
Stop re-explaining
yourself to AI.
One Chat is one place for every AI — and it remembers you. Switch to a smarter model whenever you like: your history, your preferences, and everything you've ever taught it come along.
From $19/mo replaces the stack · your chats are never training data
one-chat.app/app
GPT
Claudememory onwebPlan Mum's birthday dinner — you know what she likes.
remembered · 3 things calendar
She's vegetarian, loves the water, and the 14th is free for everyone. Three waterfront places with standout vegetarian menus — shall I book the one with the sunset terrace?
Switched AI — memory came along
Plan Mum's birthday dinner — you know what she likes.
Every major AI, in one picker
OpenAIAnthropic
Google
Meta
Mistral
DeepSeek
xAI
Qwen
MoonshotWhy every AI, not one
No single AI is best at everything
One writes beautifully. Another reasons through hard problems. A third is lightning-fast and nearly free. Locked into one app, you get one personality for every job — here, you use the right brain every time, and your memory follows you between them.
The deep thinker
Frontier models for the decisions that matter — worth the extra credits when the stakes are real.
The sprinter
Fast, nearly-free models for the everyday back-and-forth. Most messages only need this.
Tomorrow's best one
New models land here within days of release. Switch the moment something better exists — memory intact.
Sound familiar?
“I have to explain everything from scratch, every single time.”
One Chat remembers you — across every conversation and every AI.
“I'm paying for three different AI subscriptions.”
One plan replaces the stack — every major AI inside for $19 a month.
“All my chats are trapped in one app I'm scared to leave.”
Your history and memory belong to you. Move them to any AI, anytime.
Built things, not walls of text
Spreadsheets, documents,
pages, and code — built for you.
Other AIs describe things. One Chat builds them: Excel files with working formulas, polished Word documents, real web pages, working scripts — assembled live in a panel beside your conversation. Want a change? Just say it, and watch it update.
- Excel with live formulas, Word docs with styled headings
- Edit anything by asking — no tools to learn
- Download, full-screen, or reopen any build later
one-chat.app — it builds every format
| Category | Budget | Actual | Diff |
|---|---|---|---|
| Housing | 1,500 | 1,400 | 100 |
| Food | 500 | 620 | -120 |
| Transport | 300 | 180 | 120 |
| Total | 2,300 | 2,200 | 100 |
downloads as .xlsx — live formulas, styled for you
Do the maths
People juggle three or four AI subscriptions.
Each one forgets them.
The average multi-AI user pays for several apps at once — cancelling and re-subscribing depending on which model is best this month, losing their history every time. One Chat replaces the stack: every model in one place, one memory across all of them, and a monthly allowance so generous most people never think about it.
AI subscription #1$20/mo
AI subscription #2$20/mo
AI subscription #3$25/mo
One Chat Plus$19/mo
See pricing →One workspace, six things nothing else does together
Never explain yourself twice
Mention your sister's birthday once and every future chat knows it — even after you switch to a completely different AI. Your memory is yours, not the model's.
A second opinion, built in
Flip one switch and a built-in reviewer challenges the answer's plan until it holds up. Affordable AIs start giving you expensive-AI answers.
Didn't like the answer? New brain, one tap
Re-run any question with a different AI — or move the whole conversation over. Nothing you've said gets lost on the way.
It builds, not just answers
Ask for a budget, get a working budget. Documents, charts, mini-apps — built live beside your chat, editable by just asking, yours to download and keep.
Works inside your real life
Connect Gmail, Notion, your calendar and more. "Find this week's invoices and total them" actually happens — with a read-only safe mode.
Answers with receipts
When it looks something up, you get the sources — real links you can check, never made-up ones. Trust it because you can verify it.
Set up once. Known forever.
Create your account
Two minutes, no card for the free plan. Every AI is inside from the first message.
Say hello
Chat like you would anywhere else. One Chat quietly starts remembering what matters.
Watch it get personal
Every rating you give teaches it your taste. A week in, it answers like something that knows you.
Private by default
An AI that knows you this well has to be private
Most people don't trust AI apps with their life. Fair. Here's exactly how One Chat earns it.
Read the full privacy promiseZero data retention — already on
When One Chat sends your message to an AI, it only uses routes where the AI company processes the request, returns the answer, and keeps nothing. No copy of your conversation sits on their servers. This isn't a setting you have to find — it's how every account works.
Your chats never train anyone's AI
Some AI companies learn from what users type. Those companies are blocked here, outright — your words never make someone else's AI smarter, and never resurface in someone else's answer.
Your memory, your delete button
Everything One Chat remembers lives on one page you can read. Correct any fact, remove any lesson, or wipe a chat's memories — or all of them — whenever you like.
The last AI app you'll need to introduce yourself to.
Two minutes to set up. Remembered from then on.
Get started