Fireflies.ai vs Dia
Which is better in 2026? Five scores, side by side.
Fireflies.ai is the better app overall, scoring 8.3 to 8.1. Fireflies.ai wins on 3 of the 5 scores, Dia on 2.
Sales, hiring and customer teams who spend all day on video calls
Office workers who juggle email, docs and meetings in the browser
Score by score
The details
| Feature | Fireflies.ai | Dia |
|---|---|---|
| Category | AI Assistants | AI Assistants |
| Category rank | #9 of 16 | #12 of 16 |
| Developer | Fireflies.ai | The Browser Company |
| Pricing | Free + paid plans | Free + paid plans |
| Usable for free | Yes | Yes |
| iPhone & iPad | ✓ | — |
| Android | ✓ | — |
| Mac | ✓ | ✓ |
| Windows | ✓ | ✓ |
| Web | ✓ | — |
Common questions
Is Fireflies.ai better than Dia?
Fireflies.ai is the better app overall, scoring 8.3 to 8.1. Fireflies.ai wins on 3 of the 5 scores, Dia on 2.
Which is cheaper, Fireflies.ai or Dia?
Fireflies.ai: Free with limited transcription; Pro is $10 a seat a month yearly or $18 monthly. Dia: Free browser has no AI; Better Answers is $10 a month and Better Days $100. On value for money, Fireflies.ai scores higher.
Do Fireflies.ai and Dia work on the same devices?
Only Fireflies.ai runs on Web, iPhone & iPad, Android.
Which is more private, Fireflies.ai 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
Fireflies.ai
- Works in Zoom, Meet, Teams and in person
- Says it doesn't train AI on your meetings
- Talk voice typing is free and unlimited
- Free plan has limited transcription and 400 minutes of storage
- Video recording needs the Business plan
- A bot shows up in calls unless you use the desktop app
Fireflies sends a notetaker into your Zoom, Google Meet or Teams calls. Or its desktop app records without a bot. You get a searchable transcript, a summary and action items. AskFred answers questions across all your meetings. Paid plans add stats and connect to other apps. Talk, its voice typing tool, is free and unlimited on every plan. The free plan's transcription and storage are tight, so regular users will end up paying.
Full Fireflies.ai 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
