App Store · Google Play
Apps for iPhone, iPad, Android, Mac and Windows are coming soon to the App Store and Google Play. Until then, MMX works in the browser on any device.
Think further together
A living AI that thinks with you
- Nothing to learnGoing direct to ChatGPT or Claude, you first learn how to set tasks and run projects. Here you say it in your own words: MMX asks a couple of questions, makes a plan and does the work.
- More than a model pickerOther services give you a list of models. In MMX, ChatGPT and Claude work as a team: they check each other and take your project all the way to the result.
No subscription: you pay only for answers. By text or voice, on your phone, your computer and in the browser.
Powered byOpenAIANTHROPIC
Get MMX
One account on every device: your chats are there wherever you sign in.
iPhone · iPad
- Open app.heymmx.com in Safari.
- Tap Share at the bottom of the screen.
- Choose Add to Home Screen. The MMX icon appears next to your other apps.
In the browser
Works on any computer with nothing to install: Chrome, Safari, Edge, Firefox.
What MMX does
For work and for life, in one chat.
ChatGPT and Claude together
The best models in one chat. Switch any time.
Writes and reads
An email, a post or a translation in a minute. Send a contract or a photo: it finds what matters.
Searches the web
Fresh answers with links to the sources.
Talks by voice
Just speak, like you would to a person.
Wherever you are
Start on your phone, carry on on your computer.
In your language
11 languages: English, German, French, Spanish, Italian, Polish, Greek, Portuguese, Dutch, Russian and Chinese.
How it goes
Three example tasks. Not reviews, just how MMX actually works.
Opening a café
“I want to open a coffee shop, help me with a business plan”
MMX asks about the city and the budget, makes a plan, works out the costs and puts together a finished document.
Renting a flat
A photo of the lease
Finds the key points, marks the questionable clauses and writes a short note to the landlord.
Need an ad
“Write ad copy for my salon”
Looks up competitors online with links, writes options, and ChatGPT and Claude check each other.
The models inside
Switch the model right in the chat: the conversation carries on where it was.
Claude
- Opus 5.5The smartest, for hard tasks
- Sonnet 5.5Fast and smart, for every day
- Haiku 5.5The fastest
ChatGPT
- GPT-6 AstraThe strongest from OpenAI
- GPT-6.1 SolChatGPT for every day
Who we are and where your data lives
From Europe
MMX is a private service from Limassol, Cyprus.
Server in the EU
Your chats are stored on our server in Helsinki, Finland. We follow the GDPR.
Not for training
Anthropic and OpenAI get a message only to answer it and do not train their models on it.
Yours to control
Download your data or delete your account at any time.
Prices
You top up your balance, and each answer takes a little from it. No subscription, and the balance does not expire.
€10balance top-up, VAT included
€20balance top-up, VAT included
€50balance top-up, VAT included
Card payments are processed by Stripe, our Merchant of Record. You can get the unused part of a top-up back within 14 days.
Questions and answers
What is MMX?
A personal AI assistant. ChatGPT by OpenAI and Claude by Anthropic work in one chat: they answer questions, write, read documents and photos, search the web and understand your voice.
Which languages does MMX speak?
English, German, French, Spanish, Italian, Polish, Greek, Portuguese, Dutch, Russian and Chinese: the interface, the answers and voice input. It follows your device language on its own.
Can I use ChatGPT and Claude in one app?
Yes. Pick the model right in the chat and switch any time; the conversation carries on where it was.
Which models does MMX have?
Claude Opus 5.5, Sonnet 5.5 and Haiku 5.5 by Anthropic, GPT-6 Astra and GPT-6.1 Sol by OpenAI.
What can I ask MMX to do?
Write an email, a post or a CV, translate, go through a contract or a spreadsheet, read the text in a photo, find fresh information with links, make a plan, or simply talk something through.
Which devices does MMX run on?
Right now MMX works in the browser on any device: computer, phone or tablet. On iPhone and iPad, open the site in Safari and add it to the Home Screen. Apps are coming soon to the App Store and Google Play. One account on every device.
How is my data protected?
We follow the GDPR, and your chats are stored on our server in Helsinki, Finland (EU). You can download your data or delete your account at any time. The details are in the privacy policy.
How much does MMX cost?
There is no subscription. You pay only for the answers you get, and your balance is always visible in the app.
How do I get started?
Create an account in the app with your email and top up by card: €10, €20 or €50. If you have an invitation, sign in with its code.
How to get access
Create an account in the app with your email and top up your balance by card. Have an invitation? Sign in with its code or link.