Claude is the better app overall, scoring 8.8 to 8.1. Claude wins on 4 of the 5 scores, Dia on 1.
Writers, analysts and developers who work with long documents or code
Office workers who juggle email, docs and meetings in the browser
Score by score
The details
| Feature | Claude | Dia |
|---|---|---|
| Category | AI Assistants | AI Assistants |
| Category rank | #3 of 16 | #12 of 16 |
| Developer | Anthropic | The Browser Company |
| Pricing | Free + paid plans | Free + paid plans |
| Usable for free | Yes | Yes |
| iPhone & iPad | ✓ | — |
| Android | ✓ | — |
| Mac | ✓ | ✓ |
| Windows | ✓ | ✓ |
| Linux | ✓ | — |
| Web | ✓ | — |
Common questions
Is Claude better than Dia?
Claude is the better app overall, scoring 8.8 to 8.1. Claude wins on 4 of the 5 scores, Dia on 1.
Which is cheaper, Claude or Dia?
Claude: Free plan; Pro $17/month billed yearly or $20 monthly; Max from $100. Dia: Free browser has no AI; Better Answers is $10 a month and Better Days $100. On value for money, Claude scores higher.
Do Claude and Dia work on the same devices?
Only Claude runs on iPhone & iPad, Android, Linux, Web.
Which is more private, Claude or Dia?
Dia scores higher on privacy (8.2/10). History, chats and files are encrypted on your device, and Sync is end-to-end encrypted. AI partners can't train on your data. Dia keeps some unlinked content 30 days to improve itself unless you opt out.
Strengths and weaknesses
Claude
- Clear, natural writing that needs little editing
- Handles long documents and large codebases well
- No ads, and you choose whether chats are used for training
- No built-in AI image generation
- Free plan usage limits run out quickly
Claude is strong at careful writing, long documents and coding. It keeps a natural, measured tone, handles big files well, and can now take on longer tasks, build slides, docs and designs, and remember context across chats. Projects, Artifacts and connectors to apps like Google Drive make it useful for real work. The catch: there is no AI image generation, and free usage limits run out quickly.
Full Claude review
Dia
- Calm, uncluttered design from the makers of Arc
- Data is stored and encrypted on your device
- AI partners are barred from training on your data
- New users' free plan has no AI features
- Better Days plan costs $100 a month
- Windows version is still an early build
Dia comes from the team behind Arc and puts an AI chat beside your tabs that can read what's open and pull in context from Slack, Notion and Teams. Its Morning Brief, meeting prep and deck building are aimed squarely at office work. Privacy is better than most AI browsers, with your data stored on your device. Since August 2026, though, new users get no AI on the free plan, and the Windows version is still young.
Full Dia review
