The product

Five things you'll wonder
how you lived without

Everything below is the real interface, running its real flows. No mockups, no maybes — this is what using One Chat feels like.

Memory

It remembers you — no matter which AI you're talking to

Everything you tell One Chat becomes memory that belongs to you, not to any one AI company. Switch to the newest, smartest model the day it comes out — it already knows your job, your people, your projects, and how you like your answers.

  • Every memory visible on one page — correct or delete anything
  • It learns your taste from a simple thumbs up or down
  • No more “let me give you some context” paragraphs
one-chat.app — same memory, any AI
GPTClaudeGeminimemory on

Book somewhere nice for Mum's birthday dinner.

remembered · 3 things
She's vegetarian, loves being near the water, and her birthday is the 14th — here are three waterfront places with standout vegetarian menus, all free that evening.

Swap the AI above — it still knows all of this.

Second opinion

Cheap AI, expensive answers

Flip one switch and every answer gets challenged before you see it. A built-in reviewer picks apart the plan — wrong dates, missed options, stale prices — and sends it back until it holds up. Affordable models suddenly punch way above their price.

  • One toggle above the chat — pick your strictness, hit send
  • Click the Deliberation row to watch the debate: plan, pushback, revision, approval
  • Turns itself off after each use, so it never runs up costs quietly
one-chat.app — turn on a second opinion
everyday AI Adversarial · off Adversarial · 50%

Plan flights and hotels for Japan in April — best value.

Deliberationplan · review · 2 rounds
Plan · round 1compare fares → cheapest week → hotels by rating
Review — rejected. Peak blossom week; prices double. Check shoulder dates.
Plan · round 2shifted one week · rail pass · re-ranked hotels
Review — approved
April 15–24: same blossoms, 38% cheaper. Full plan below.
reviewed · 2 rounds

Building

Answers you can actually use

Ask for a budget and get a budget — sliders and all. Documents, charts, trackers, little tools: built live in a panel next to your conversation. Change it by asking — “make the food budget bigger” — and it updates in place.

  • Edit anything by asking — no tools to learn
  • Full-screen view, code view, copy or download every file
  • Every build saved with the chat; flip between them anytime
one-chat.app — it builds things

Turn that into a budget I can play with.

Done — live budget on the right. Drag any number.
Japan · Aprillive
Flights$1,840
Hotels$1,310
Food + fun$900
Total $4,050 · under budget

Freedom

Never stuck with one AI's answer — or one AI

Every reply has a retry button: same question, different brain, one tap. Found a model you like better? Move the entire conversation across — history intact, nothing to copy-paste, nothing lost.

  • Re-run any answer with any model
  • Migrate whole conversations in one click
  • Compare voices until you find the one that fits
one-chat.app — didn't like it? one tap

Write a toast for my brother's wedding.

“Ladies and gentlemen, marriage is a sacred institution…”
a bit stiff try another AI
“For those who don't know me — I'm the brother who taught Tom everything he knows. Which, as his wife will confirm, took about fifteen minutes…”
same question, new brainthat's the one

Connected

It can actually do things

Connect the apps you live in and ask in plain words: “Find this week's invoices and total them.” “What's on my calendar Friday?” One Chat picks the right app and does it — with a safe mode that can look but never touch.

  • Gmail, Notion, calendars, Slack, GitHub and hundreds more
  • Safe mode: read-only until you say otherwise
  • Every action it takes is shown, clickable, and inspectable
one-chat.app — your apps, connected
Gmail on
Calendar on
Notion on
Slack on
GitHub on
Drive on
Outlook on
Teams on

Roadmap

Where this is going

Already in the product

Memory that travels between AIs Second-opinion review mode Live documents & mini-apps Retry with a different AI Move conversations between AIs Connected apps with safe mode Answers with checkable sources An assistant that learns your taste
Coming soon

Agents

Hand over a goal — “plan the party, invite everyone” — and it works through the steps while you get on with your day.

Coming soon

Voice conversations

Talk instead of type — same memory, same tools, hands free.

Coming soon

Phone app

Your whole workspace in your pocket, synced with everything.

Coming soon

Routines

“Every morning, summarise my inbox and my day.” Set it once, it just happens.

Coming soon

Shared spaces

A workspace your family or team shares — with a memory of its own.

Have a request? There's a feedback button inside the app — real reports get fixed, often the same week.

Zero data retention — on for everyone

Your messages only travel routes where the AI company processes the request, returns the answer, and keeps nothing. Not stored, not reviewed, not on a server somewhere.

Never used for training

Companies that learn from user chats are blocked outright — your conversations never make anyone else's AI smarter. Both are the default, not a setting to find.

See it remember you.

The tour above is the real thing. The only feature left to show is how it feels when it's your life it knows.

Get started