kitio.aiUnitlab AI vs Sieve
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Unitlab AI starts at See pricing page and Sieve starts at See pricing page. 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
- Multimodal annotation
- Auto-labeling
- Dataset versioning
- Quality assurance workflows
- API, SDK and webhooks
- Medical annotation
- Curated video datasets
- Editing pairs
- Audio-visual data
- Dense annotation and QA
- Computer-use environments
| Feature | Unitlab AI | Sieve |
|---|---|---|
| Best for | Data platform for annotating and managing AI training data | Curated video, audio and image datasets for AI labs |
| Category | Data & analytics | Data & analytics |
| Pricing model | Freemium | Paid |
| Starting price | See pricing page | See pricing page |
| Free plan | Yes | No |
| Made by | Unitlab | Sieve |
| Based in | – | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Unitlab AI starts at See pricing page and Sieve starts at See pricing page. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
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
Unitlab AI
- One workspace for many data types
- Built-in auto-labeling
- Self-hosted option on Enterprise
- Per-seat pricing grows with team size
- Paid prices need a sales conversation
- Free plan volume is a lifetime cap
Sieve
- Covers video, audio, image and interaction data
- Filters for rights and quality
- Custom datasets delivered on an SLA
- No public pricing
- Sales-led purchasing
- Not a tool for individual developers
Which one should you choose?
Choose Unitlab AI if you want:
- One workspace for many data types
- Built-in auto-labeling
- Self-hosted option on Enterprise
Watch out: per-seat pricing grows with team size.
Choose Sieve if you want:
- Covers video, audio, image and interaction data
- Filters for rights and quality
- Custom datasets delivered on an SLA
Watch out: no public pricing.
Unitlab AI vs Sieve FAQ
What is the difference between Unitlab AI and Sieve?
Unitlab AI: Data platform for annotating and managing AI training data. Sieve: Curated video, audio and image datasets for AI labs. Both are data & analytics tools.
Is Unitlab AI or Sieve cheaper?
Unitlab AI starts at See pricing page and Sieve starts at See pricing page. Check both pricing pages for current plans.
Do Unitlab AI and Sieve have free plans?
Unitlab AI: Yes. Sieve: No.
Who makes Unitlab AI?
Unitlab AI is made by Unitlab.
Who makes Sieve?
Sieve is made by Sieve.
Which should I choose, Unitlab AI or Sieve?
Choose Unitlab AI if you value one workspace for many data types and built-in auto-labeling. Choose Sieve if you value covers video, audio, image and interaction data and filters for rights and quality.