Lambda vs Unitlab Annotate vs Stack AI

Which one fits you in 2026? Traffic, pricing, input → output, tasks and community side by side.

Your tool
Lambda
vs
Competitor 1
Unitlab Annotate
Competitor 2
Stack AI
Competitor 3
Compare
3 tools · best value per row highlighted
Your tool Lambda
lambda.ai
Lambda is a GPU cloud built for training and serving AI models.
Competitor Unitlab Annotate
unitlab.ai
Competitor Stack AI
stack-ai.com
Connect AI models visually
Traffic estimated monthly website traffic
Monthly visits
—
7.2Kvisits/mo
6.3Kvisits/mo
MoM change
—
▲ 76.6%
▼ 57.9%
6-month growth
—
+37.1%
-93.7%
Global rank web
—
#2,769,635
#1,700,092
Avg. last 3 months
—
5.1K
13.9K
Bounce rate lower is better
—
62%
39%
Pages / visit
—
1.1
1.8
Visit duration
—
1m 41s
14s
Traffic sources
—
—
—
LambdaUnitlab AnnotateStack AI
042K84K126K167.9KUnitlab Annotate · 6.4KUnitlab Annotate · 5.3KUnitlab Annotate · 4.3KUnitlab Annotate · 4.1KUnitlab Annotate · 4.1KUnitlab Annotate · 4.1KUnitlab Annotate · 7.2KStack AI · 143.4KStack AI · 153.7KStack AI · 167.9KStack AI · 160KStack AI · 99.4KStack AI · 35.9KStack AI · 17.4KStack AI · 20.6KStack AI · 14.9KStack AI · 6.3K1K10K100K1MUnitlab Annotate · 6.4KUnitlab Annotate · 5.3KUnitlab Annotate · 4.3KUnitlab Annotate · 4.1KUnitlab Annotate · 4.1KUnitlab Annotate · 4.1KUnitlab Annotate · 7.2KStack AI · 143.4KStack AI · 153.7KStack AI · 167.9KStack AI · 160KStack AI · 99.4KStack AI · 35.9KStack AI · 17.4KStack AI · 20.6KStack AI · 14.9KStack AI · 6.3KNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Paid
Freemium
Freemium
Starting price
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$89per month · free tier available
Free tier
Free tier
–
Free trial
–
–
API access
–
–
Plans
On-demand instances (8x GPU) CustomOn-demand instances (1x GPU) Custom1-Click Clusters CustomReserved / Superclusters Custom
Free FreeActive $99/moPro $195/mo
—
Capabilities input → output
Input
CodeData
AudioDocumentsImagesTextVideo
DataDocumentsText
Output
Apps
Data
Apps
Skill level
Advanced
Advanced
Intermediate
Categories
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
2
6
5
Agents
–
–
GPU infrastructure
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–
Image annotation
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No-code
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–
Workflows
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–
Agent creation
–
–
Image segmentation
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–
Object identification
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–
Data quality control
–
–
Developer tools
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–
Finance workflow automation
–
–
OCR
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–
Video analysis
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–
Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 0
▲ 0
Saves
0
0
0
Reviews
0
0
0
Prompts
0
0
0
Verified listing
–
–
–

Traffic figures are third-party estimates for the tool's own domain; tools sharing a domain with a bigger product are not counted. Pricing is captured from each tool's site and may lag.