ChatGPT vs Lumo

ChatGPT9.4Visit Lumo7.8Visit

Higher score ChatGPT #1 in AI Chatbots 9.4/10 Free plan Free plan✓ 6 of 6 features Visit ChatGPT

vs

Lumo #15 in AI Chatbots 7.8/10 Free plan Free plan✓ 6 of 6 features Visit Lumo

• ChatGPT fits best

  General-purpose AI chat across work and personal tasks

• Lumo fits best

  Private chat with Proton Drive files

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature	ChatGPT 9.4/10 Visit ↗	Lumo 7.8/10 Visit ↗
At a glance
Editor score	9.4	7.8
Ranking	#1 in AI Chatbots	#15 in AI Chatbots
Best for	General-purpose AI chat across work and personal tasks	Private chat with Proton Drive files
Pricing model	Free plan + paid	Free plan + paid
Starting price	—	—
Free plan	✓	✓
Free trial	—	—
Deployment	Cloud, Mobile, Desktop, Browser extension	Cloud, Mobile
Platforms	Web, iOS, Android, Chrome extension	Web, iOS, Android
Support	Live chat, Docs · 24/7	Docs
Compliance	SOC 2, ISO 27001, GDPR, PCI DSS, SSO/SAML, 2FA	GDPR, HIPAA, ISO 27001, SOC 2
Integrations	10 integrations	1 integrations
Built for	Solo, Small business, Mid-market, Enterprise	Solo, Small business, Mid-market, Enterprise
Features ChatGPT 6/6 · Lumo 6/6
Web search	✓	✓
File uploads	✓	✓
Image generation	✓	✓
Mobile apps	✓	✓
App integrations	✓	✓
Team workspace	✓	✓
Our review
Pros	Combines web search, file analysis, data visualization, images, and voice Works across web, desktop, mobile, and Chrome Connects with Google, Microsoft, Slack, GitHub, HubSpot, and more	Searches the web and cites sources in answers Analyzes uploaded documents and generates or edits images Encrypted Projects, Ghost mode, and Proton Drive integration
Cons	Free access limits uploads, image generation, search, memory, and context Advanced capabilities and higher usage limits require paid plans Its broad feature set may be more than needed for simple chat	Only Proton Drive is listed as an integration Free access limits Max usage, messages, history, and image generations The paid plan's price is not clearly stated
Our verdict	ChatGPT is OpenAI’s conversational AI assistant for individuals and teams that need help with information, creation, analysis, and work. It answers questions, explains concepts, drafts and summarizes content, translates languages, reasons… Read the review →	Lumo is Proton’s AI chat assistant for people who want to ask questions, write, code, summarize documents, search the web, or generate and edit images. It is available on web, iOS, and Android, with features that also suit people… Read the review →

Strengths and trade-offs

• ChatGPT — where it wins

  • Combines web search, file analysis, data visualization, images, and voice
  • Works across web, desktop, mobile, and Chrome
  • Connects with Google, Microsoft, Slack, GitHub, HubSpot, and more

  Where it doesn't

  • Free access limits uploads, image generation, search, memory, and context
  • Advanced capabilities and higher usage limits require paid plans
  • Its broad feature set may be more than needed for simple chat

• Lumo — where it wins

  • Searches the web and cites sources in answers
  • Analyzes uploaded documents and generates or edits images
  • Encrypted Projects, Ghost mode, and Proton Drive integration

  Where it doesn't

  • Only Proton Drive is listed as an integration
  • Free access limits Max usage, messages, history, and image generations
  • The paid plan's price is not clearly stated

• ChatGPT9.4/10 · Free plan

  A broad AI assistant combining chat, research, files, images, voice, and connected work tools.

  Visit ChatGPTFull verdict →
• Lumo7.8/10 · Free plan

  A privacy-oriented assistant for cited web search, document work, and encrypted Projects.

  Visit LumoFull verdict →