kitio.aiBLUF vs Side Copilot
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. BLUF starts at See pricing page and Side Copilot starts at $4.90/mo. Check both pricing pages for current plans.
At a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Web page summaries
- PDF and local file support
- YouTube video summaries
- Explain mode
- Follow-up questions
- Chat with open tabs
- Browser agent mode
- Vertical tab sidebar
- Spaces with cloud sync
- Bring your own AI key
| Feature | BLUF | Side Copilot |
|---|---|---|
| Best for | Browser extension that summarizes and explains pages, PDFs and videos | AI agent in your browser side panel with vertical tab spaces |
| Category | Productivity | Productivity |
| Pricing model | Freemium | Freemium |
| Starting price | See pricing page | $4.90/mo |
| Free plan | Yes | Yes |
| Made by | BLUF | Side Copilot |
| Based in | – | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
|
|
Pricing compared
BLUF starts at See pricing page and Side Copilot starts at $4.90/mo. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
3 plans
Free
Free
- Up to 5 spaces with cloud sync
- Chat with current page
- 2 agent trials per day
Pro
$4.90/mo
- Unlimited spaces
- Agent mode with BYOK
- Custom shortcut templates
Pro+
$11.90/mo
- Everything in Pro
- Unlimited use of Side Copilot agent
- Cross-page browser agent
Prices in USD, checked Oct 29, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
BLUF
- Works on pages, PDFs and videos
- Keyboard shortcut for quick access
- Explain mode for jargon
- Browser extension only
- Pricing details not published in the evidence
- Basic feature set compared with larger tools
Side Copilot
- Free plan with five spaces
- Works across several browsers
- Agent can group and search tabs
- Agent mode is limited on the free plan
- Cross-page agent needs Pro+
- Pro+ price differs between plan table and card
Which one should you choose?
Choose BLUF if you want:
- Works on pages, PDFs and videos
- Keyboard shortcut for quick access
- Explain mode for jargon
Watch out: browser extension only.
Choose Side Copilot if you want:
- Free plan with five spaces
- Works across several browsers
- Agent can group and search tabs
Watch out: agent mode is limited on the free plan.
BLUF vs Side Copilot FAQ
What is the difference between BLUF and Side Copilot?
BLUF: Browser extension that summarizes and explains pages, PDFs and videos. Side Copilot: AI agent in your browser side panel with vertical tab spaces. Both are productivity tools.
Is BLUF or Side Copilot cheaper?
BLUF starts at See pricing page and Side Copilot starts at $4.90/mo. Check both pricing pages for current plans.
Do BLUF and Side Copilot have free plans?
BLUF: Yes. Side Copilot: Yes.
Who makes BLUF?
BLUF is made by BLUF.
Who makes Side Copilot?
Side Copilot is made by Side Copilot.
Which should I choose, BLUF or Side Copilot?
Choose BLUF if you value works on pages, pdfs and videos and keyboard shortcut for quick access. Choose Side Copilot if you value free plan with five spaces and works across several browsers.