Compare

Arvis vs ChatGPT vs Notion AI vs Mem.ai

An honest side-by-side. We will tell you when one of the others is the better pick, because the wrong sale costs both of us more than no sale at all.

Capability Arvis ChatGPT Notion AI Mem.ai
Telegram-native ✓×××
No dashboard required ✓×××
Zero-access encryption Beta×××
Multi-channel (Telegram + WhatsApp) WA soon×××
Calendar write (creates events) ✓×××
Voice input ✓✓××
Document Q&A (RAG) ✓✓✓✓
Long-term memory ✓✓Notion-only✓
Romanian language (native quality) ✓DecentDecent×
Native UI languages 13 nativeMostly EN10+EN only
EU data residency ✓×××
Free trial 15 daysFree tierSmall free×
Entry price €6/mo$20/mo$10/mo$14.99/mo

Arvis

€6/mo · 15-day trial
  • Telegram-nativeYes
  • Zero-access encryptionBeta
  • Calendar writeYes
  • Voice inputYes
  • Document Q&AYes
  • Native UI languages13
  • EU-hostedYes

ChatGPT

$20/mo · Plus
  • Telegram-nativeNo
  • Zero-access encryptionNo
  • Calendar writeNo
  • Voice inputYes
  • Document Q&AYes
  • EU-hostedUS

Notion AI

$10/mo
  • Telegram-nativeNo
  • Voice inputNo
  • Calendar writeNo
  • Memory (Notion)Yes
  • Document Q&AYes

Mem.ai

$14.99/mo
  • Telegram-nativeNo
  • Voice inputNo
  • Calendar writeNo
  • Long-term memoryYes

When to choose Arvis

Four shapes of person who consistently win with us:

The phone-first operator

You run your life from Telegram already. Switching to a new app to talk to an AI is friction you will never pay. ARVIS lives where you already are — no install, no second tab.

The bilingual professional

You think and write in Romanian, but business runs in English. ARVIS is the only assistant on this list that handles both natively without quality collapse on the smaller language.

The calendar & reminder power-user

“Tomorrow 9am call Andrei” — one sentence, event created, reminder set, your day reorganized. The others can discuss your calendar; ARVIS writes to it.

The privacy-conscious EU customer

EU-hosted (Germany), zero-access encryption in beta, GDPR baked in. No US sub-processor sees your messages in plaintext. That isn't true of any other option on this list.

When Arvis is not the right pick

An honest list. If one of these is you, pick the tool that fits and we will see you when your needs change.

You need long-form drafting

Writing a 5,000-word essay, novel chapter, or research paper. Telegram is a terrible canvas for that — small screen, no formatting toolbar.

Better: ChatGPT

You live inside Notion already

Your second brain is a 4,000-page Notion workspace. The AI you want is the one that already knows that graph and can write into it.

Better: Notion AI

You want a knowledge graph

Auto-linking notes, surfacing forgotten ideas, building a personal Zettelkasten. ARVIS remembers what you tell it; it doesn't build a topology of it.

Better: Mem.ai

You don't use messaging apps

If Telegram and WhatsApp are not part of your day, putting an assistant there is friction, not removal of friction. Stay where your work lives.

Better: ChatGPT / Notion AI

Try Arvis free for 15 days

No credit card. One Telegram message to start. Cancel just as fast if it's not for you — we won't fight you for the unsubscribe.

Open in Telegram → See pricing →

Comparison reflects publicly available product information as of May 2026. ChatGPT, Notion AI, and Mem.ai are trademarks of their respective owners. We're a small team and we want this comparison to be accurate — tell us if anything is wrong and we'll fix it.