01Which is better for writing?
ChatGPTStrong, plus images, voice and video
ClaudeOften praised for clear, natural writing
Lucie
Everyday drafts in your voice
ChatGPT vs Claude vs Lucie
The big two and Lucie, side by side.
The short answer
ChatGPT and Claude are general AI assistants, mostly used for writing, research and work. Lucie is a personal AI for your everyday life. They do different jobs, so here is where each one fits.
ChatGPT is the all-rounder: strong at research, writing, images and voice, with an agent on paid plans. It shows ads on its Free and Go plans.
Claude is especially good at writing, analysis and long documents, and on paid plans it can work in your browser and on your desktop. Anthropic says it will stay ad-free.
Lucie writes, plans and takes action too, with your approval. What sets it apart is proactive support: instead of waiting for a question, it connects your calendar, inbox and health and helps at the right moment.
How ChatGPT, Claude and Lucie compare
| ChatGPT | Claude | Lucie | |
|---|---|---|---|
| Type of product | General AI assistant for writing, research and work | General AI assistant for writing, research and work | Personal AI for your whole life |
| Questions and research | Yes | Yes | Yes |
| Everyday requests | Yes | Yes | Yes |
| Email and calendar | Via integration | Via integration | Yes |
| Connected apps | Via integration | Via integration | Via integration |
| Multi-step tasks | Requires approval | Requires approval | Requires approval |
| What it is | OpenAI’s general AI assistant, with an agent mode for tasks | Anthropic’s AI assistant for thinking, writing and getting work done | A personal AI assistant that gets things done and helps before you ask |
| How you use it | Chat or voice; agent mode for tasks | Chat in the Claude app or on the web; agents in Chrome and on your desktop | Chat or talk in the Lucie app |
| Writing and research | YesIts biggest strength: writing, explaining, summarising, research | YesA major strength: writing, analysis and long documents | YesDrafts, documents and web comparisons; not built for deep research |
| What it does best | Questions, writing, research and documents; supervised browser tasks on paid plans | Writing, research, coding and documents; Cowork and Claude in Chrome for multi-step tasks on paid plans | Email, calendar, research, follow-ups and bookings, connected to your health and goals |
| Before it acts | Requires approvalAgent pauses for your confirmation on high-impact actions | Requires approvalPurchases always need your approval; you can make the browser agent ask before every action | Requires approvalNothing is sent, booked or bought until you confirm |
| Proactive help | LimitedMostly answers when you ask; you can schedule tasks to run later | LimitedAnswers when you ask; paid plans can schedule tasks | YesProactive support reads your calendar, inbox, health and memory, and speaks up only when something matters |
| Personal memory | YesMemory across chats, which you can manage | YesOn by default; view, edit, pause or delete it | YesRemembers what matters; review, edit or remove anything |
| Connects to | Via integrationGmail, Google Calendar, Drive, Slack and more through apps; Apple Health in the US | Via integrationGmail, Google Calendar, Drive and more; Apple Health in the US on Pro and Max | Via integrationGmail, Outlook, iCloud, Google Calendar, Apple Health, Oura, WHOOP, Garmin and more |
| What users report on X | Works for ordering and unsubscribing. Complaints: slow, buggy browsing | Praised for coaching, email drafts and life admin. The loudest complaint is weekly usage limits | Our own product, so we left it out of this row. It is only on iPhone and Mac |
| Where it works | Web, desktop and mobile | Web, Mac, Windows, iPhone, Android and Chrome | iPhone and Mac |
| Who can get it | YesWidely available; agent mode on paid plans; Health in the US | Yes185 countries, including the EU and UK. 18+ | YesOn the App Store and for Mac |
| Price | Free; Go $8/mo; Plus $20/mo; Pro from $100/mo | Free; Pro $20/mo; Max $100/mo; Ultra $200/mo | 7-day trial, then a subscription |
How ChatGPT, Claude and Lucie differ
ChatGPTClaude02Which does more for you?
ChatGPTAgent mode on paid plans
ClaudeCowork and Claude in Chrome on paid plans
Lucie
Books, buys and drafts, after your yes
03What about ads and data?
ChatGPTAds on Free and Go; trains unless you opt out
ClaudeNo ads; trains unless you opt out
Lucie
No ads, and never trains on your chats
04Does it know your health?
ChatGPTReads Apple Health in the US
ClaudeReads Apple Health in the US, on Pro and Max
Lucie
Apple Health, Oura, WHOOP, Garmin and more
Reactive or proactive?
Most AI waits for you to ask, Lucie helps before you need to.
ChatGPT
LimitedMostly answers when you ask; you can schedule tasks to run later
Claude
LimitedAnswers when you ask; paid plans can schedule tasks
Lucie
YesProactive support reads your calendar, inbox, health and memory, and speaks up only when something matters
Email
Leo’s schoolFriday pick-up moves to 14:00
Calendar
Friday 14:00Client call with Ana
Sleep
Recovery 48%Short night before a busy day
Proactive supportReads the context.
Finds what matters.
Lucie suggests
Leo’s pick-up moved to 14:00 on Friday, the same time as your call with Ana. Move the call to 15:30?
Not nowMove call
Nothing changes until you tap.
- An important meeting tomorrow: it helps you prepare
- An email that needs a reply: it drafts one for you
- A restaurant that’s fully booked: it watches in the background and tells you when a table opens, even on another date
- A friend’s birthday coming up: it suggests a gift and can order it with your OK
- A request nobody answered: it follows up
- A refund or insurance claim you’re owed: it spots it in your email and helps you claim it
They answer your questions.
Lucie notices what you didn’t ask.
Proactive support connects your day and helps first.
You ask, it answers
Summarise this report in five bullets.
Lucie, before you ask
Good morningYour day in twenty seconds
7h 40mSleep
82%Recovery
3Events
- Deep work
- Lunch with Ana
- Run · 40 min
Heads-up: a subscription renews in 3 days.
Short night. Should I move your run to tomorrow and keep 9:30 free for deep work?
Not nowYes, do it
Good morningYour day in twenty seconds
7h 40mSleep
82%Recovery
3Events
- Deep work
- Lunch with Ana
- Run · 40 min
Heads-up: a subscription renews in 3 days.
Your day in twenty seconds.
Every morning, Lucie briefs you from your real calendar: how you slept, what is coming and anything that needs you.
See how Lucie helps organise your dayYou owe Sam a replySent Tuesday · “Dinner on the 14th?”
Hi Sam, the 14th works. 20:00 at the usual place?
EditSend
Drafted for you. It sends only when you tap Send.
A reply you owe, drafted for you.
Lucie spots the email you haven’t answered and drafts the reply. Nothing sends until you tap Send.
ChatGPT, Claude and Lucie, feature by feature
| ChatGPT | Claude | Lucie | |
|---|---|---|---|
| Type of product | General AI assistant for writing, research and work | General AI assistant for writing, research and work | Personal AI for your whole life |
| Writing and research | YesExcellent | YesExcellent | YesDrafts, documents, and web comparisons with a link to each option |
| Via integrationReads Gmail through a connector | Via integrationGmail connector | YesGmail, iCloud Mail and Outlook: inbox overview, drafts and follow-ups. You send | |
| Calendar | Via integrationReads Google Calendar through a connector | Via integrationGoogle Calendar connector | YesGoogle, iCloud and Outlook calendars. Morning briefing and day-ahead plan |
| Taking actions | Requires approvalAgent mode on paid plans; asks before important steps | Requires approvalCowork and Claude in Chrome on paid plans; purchases need approval | Requires approvalBooks tables, buys tickets, places orders, drafts replies and works on your Mac. Only after you confirm |
| Background agents | LimitedAgent mode for one task at a time, on paid plans | LimitedCowork and Claude in Chrome, on paid plans | YesMany agents that work on your goals in the background |
| Proactive help | LimitedMostly answers when you ask; you can schedule tasks to run later | LimitedAnswers when you ask; paid plans can schedule tasks | YesProactive support reads your calendar, inbox, health and memory, and speaks up only when something matters |
| Personal memory | YesYes, manageable | YesYes, and you can edit it | YesRemembers what matters. You can review, edit or remove it, and import a ChatGPT export |
| Sleep insights | LimitedChatGPT Health can read Apple Health (US, 18+) | LimitedCan read Apple Health or Health Connect (US, Pro and Max) | YesSleep duration, stages and history, with patterns you can ask about |
| Workout support | Not currently supported | Not currently supported | YesWorkouts and a weekly plan around your recovery |
| Meal tracking | Not currently supported | Not currently supported | YesSend a photo of a meal for calories and macros, linked to your day |
| Breathwork and meditation | Not currently supported | Not currently supported | YesGuided breathing and meditation in the app |
| Focus and app blocking | Not currently supported | Not currently supported | YesFocus sessions, app and website blocking, daily allowances. Within iOS and macOS limits |
| Wearables | LimitedApple Health only, in the US | LimitedApple Health and Health Connect only, in the US | Via integrationApple Health, Oura, WHOOP, Garmin, Polar, Suunto, Fitbit, Google Health Connect |
| Platforms | Web, desktop, mobile | Web, Mac, Windows, iOS, Android | iPhone (iOS 18+) and Mac (macOS 14+, Apple silicon) |
Ads, training and who pays
| ChatGPT | Claude | Lucie | |
|---|---|---|---|
| Is advertising part of the business? | YesAds on Free and Go since February 2026, starting in the US. None on Plus or Pro | NoNo. Anthropic says Claude will remain ad-free | NoNo ads, and it never sells your data. Paid by subscription |
| Can your chats train its models? | YesOn by default on Free, Go, Plus and Pro. Health data is not used | YesYes, unless you opt out; kept up to 5 years if you allow it | NoNo. Lucie does not train on your chats |
| Can you opt out of training? | YesSettings > Data controls, or Temporary Chat | YesPrivacy Settings, or use incognito chats | Nothing to opt out of. You also choose what to connect and can disconnect any source |
| Can you delete your data? | YesDelete chats, memories or your whole account | YesDelete chats and memories; deleted chats are not used for training | YesEdit or remove memories; request deletion of your account and data |
| What does it connect to? | Gmail, Google Calendar, Drive, Slack and other apps; Apple Health in the US | Gmail, Calendar, Drive and other connectors; Apple Health in the US | Mail, calendars, contacts, tasks, wearables and Screen Time, each with its own permission |
| Where is data stored? | The US and other countries where its vendors are | Not publicly confirmedNot published for consumer accounts | Made and hosted in the EU: servers and team offices are in Europe. The holding company is in Delaware, US |
| What happens before it acts? | Requires approvalAgent pauses for confirmation on high-impact actions | Requires approvalPurchases always ask; the browser agent can ask before every action | Requires approvalNothing is sent, booked or bought until you confirm |
Read the privacy policies yourself: ChatGPT · Claude · Lucie
Price and who can get it
ChatGPT
Free. Go $8/mo (may include ads). Plus $20/mo. Pro from $100/mo.
Widely available. Agent mode on paid plans. ChatGPT Health in the US, 18+.
Claude
Free. Pro $20/mo. Max $100/mo. Ultra $200/mo.
185 countries, including the EU and UK. 18+.
Lucie
7-day trial, then a subscription. See the App Store for prices where you live.
On the App Store and for Mac.
Also built in: health, focus and wellbeing
Lucie connects your body to your plans.
This week
- MonRun · 40 min
- TueStrength · 45 min
- WedRun · 40 minRecovery 41%. Swap for an easy walk?
- ThuRun · 40 min
- FriRest
- SatLong run · 70 min
- SunYoga · 30 min
A week of workouts that follows your body.
Lucie writes a weekly plan around your calendar and recovery, and changes it when you sleep badly.
See which wearables workBreathe inBreathe out2 minutes · guided
Two minutes to reset between calls.
Ask for a short guided breathing exercise, or let Lucie suggest one.
Explore breathwork and meditationOur honest take
Pick ChatGPT when
- You want one assistant for research, images and voice
- You like supervised agent tasks on a paid plan
- You want the biggest ecosystem of apps
Pick Claude when
- You write a lot, or work with long documents
- You want an assistant with no ads
- You want help on your desktop and in your browser
Pick Lucie when
- You want everything they do: errands, email, calendar and bookings
- You also want your health, sleep and relationships connected to your plans
- You want it all in one place, with your data kept private
- Research, images and voice?ChatGPT. It is the broadest all-rounder.
- Writing and long documents, no ads?Claude. It is the strongest writer here, and ad-free.
- Want help before you ask?Lucie. It writes, plans and acts with your approval, and proactive support connects your day. Not the tool for deep research or coding.
What people report on X
ChatGPT
What works
So I bought this aged channel and it happened to be that it’s maxed on its subscription. Subscribed to over 350 channels and I thought of an easier way to unsubscribe to all because I couldn’t subscribe to my competitors. Decided to give the task to ChatGPT agent to do that for… pic.twitter.com/pMk6eH1bV5
— Emmanuel Desmond (@manueldesmondd) November 1, 2026
I used a ChatGPT agent to talk to sky on live chat and reduce my bill by £60 a month…
— James Smith (@therealhostman) November 4, 2026
What goes wrong
Told my ChatGPT agent: "I need the biggest external drive you can find. Card's connected. Go buy it."
— Sina Estavi 🇮🇷 (@SinaEstavi) October 19, 2026
It searched, picked a 26TB WD, and placed the order on Amazon. Straight from my bank card.
Total time I spent: zero seconds.
My time is worth more than my money, so I'll take… pic.twitter.com/TbUaL6Ob2U
Agentic commerce is undeniably overhyped based on current usage
— Olivia Moore (@omooretweets) November 4, 2026
...but, I'd be willing to bet it's massively underhyped based on volume agents will drive in ~3-6 months.
And, if you're not optimizing your product (software, service, or physical good) for agents, you'll be left… https://t.co/PhbdCZutpA
Claude
What works
Joe Mazulla says he uses AI everyday to help coach his team
— Josh Chambers (@JoshChambers) October 30, 2026
“I use Claude everyday for coaching thoughts. I love Claude. I’m all in on Claude. It was beneficial in the offseason for my personal development and where I wanted to take things psychologically for our team.”
“I’ll… pic.twitter.com/iERiRd696t
Sometimes I lament that AI has taken parts of being a sfw engineer I really enjoyed….then there are days like tonight, 3 deliverables from 3 distinct areas of my life….I’ve been swapping between chatGPT and Claude to achieve in the last 2hrs, things which would have needed at… pic.twitter.com/5IbLbV5Jou
— Ngoni Mujuru (@ngonithetechguy) November 2, 2026
What goes wrong
Claude Opus 5.5 on Max: Your weekly limit disappears in 2 days.
— Stats Wire (@StatsWire) November 2, 2026
Claude Opus 5.5 on Medium: You start wondering if the usage limits even exist.
i have absolutely no doubt that AI, (and Anthropic in particular) is becoming increasingly human like. I have the pro version of Claude, and every now and then when I ask it to do something through cowork, it pushes back, makes silly excuses and tells me it can't be done, even…
— Arpit Agarwal (@arpitagarwal1) October 31, 2026
Your life is more than a to-do list.
Your inbox, calendar, sleep and workouts in one AI.
iPhone and Mac.
Questions people ask
Is Lucie an alternative to ChatGPT or Claude?
Not really. ChatGPT and Claude are general assistants for writing, research and work. Lucie is a personal AI that runs your everyday life: your inbox, calendar, plans, health and the people you care about. Many people use one of them for work and Lucie for life.
Is ChatGPT or Claude better?
It depends on the job. ChatGPT is the broader all-rounder, with images and voice. Claude is often preferred for writing and long documents, and it has no ads. Both are strong.
What is Lucie’s proactive support?
Proactive support is how Lucie helps before you ask. It connects signals from your calendar, email, health and daily life, recognises what matters and suggests the next step. Anything it sends, books or changes waits for your yes.
Does Claude have ads?
No. Anthropic says Claude will remain ad-free. ChatGPT shows ads on its Free and Go plans.
Do ChatGPT and Claude train on my chats?
Both can, unless you opt out in settings. Claude keeps chats up to 5 years if you allow training, and 30 days if you don’t.
How much do ChatGPT and Claude cost?
Both have free plans. ChatGPT Plus and Claude Pro are $20 a month. ChatGPT Pro starts at $100, Claude Max is $100 and Claude Ultra is $200.
Does Lucie train on my chats?
No. Lucie does not train on your chats, never sells your data and has no ads.
Related comparisons
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PokeLucieInstinct vs Poke vs LucieTwo assistants you text. One does more on its own, one is easier to start.Sources
How we compared. We read each product’s own website, help pages, terms and privacy policy, then reputable press where official pages were missing or unreachable. Anything we could not confirm is labelled. Lucie is our product, so we have tried to describe the others the way we would want to be described. The Lucie screens on this page are illustrations, not screenshots.
- ITPro: OpenAI’s agent for ChatGPT
- BetaNews: ChatGPT integrates with Gmail and Google Calendar
- MacRumors: OpenAI Pro subscription tiers
- OpenAI privacy policy
- ChatGPT pricing
- OpenAI Help: ads in ChatGPT
- OpenAI Help: how your data improves models
- ChatGPT Health
- Claude pricing
- Anthropic: Claude is a space to think (ad-free)
- Anthropic: updates to consumer terms (training choice)
- Claude privacy center: training and opt-out
- Anthropic: Claude for healthcare and life sciences
- Claude help: connectors
- Claude help: memory
- Anthropic supported countries
- Lucie: everything Lucie can do
- Lucie: integrations
- Lucie: trust and security
- Lucie privacy policy
- Lucie on the App Store