Langflow vs Unitlab Annotate vs Stack AI vs Langdock

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

Your tool
Langflow
vs
Competitor 1
Unitlab Annotate
Competitor 2
Stack AI
Competitor 3
LLangdock
Compare
4 tools · best value per row highlighted
Your tool Langflow
langflow.org
Drag and drop AI
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Competitor Unitlab Annotate
unitlab.ai
Make main Remove
Competitor Stack AI
stack-ai.com
Connect AI models visually
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Competitor LLangdock
langdock.com
Langdock is an AI adoption platform that puts chat, workflow automation, custom agents, integrations and an API in one workspace for an entire company.
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Traffic estimated monthly website traffic
Monthly visits
215.3Kvisits/mo
7.2Kvisits/mo
6.3Kvisits/mo
—
MoM change
▼ 0.7%
▲ 76.6%
▼ 57.9%
—
6-month growth
-4.9%
+37.1%
-93.7%
—
Global rank web
#217,191
#2,769,635
#1,700,092
—
Avg. last 3 months
225.2K
5.1K
13.9K
—
Bounce rate lower is better
44%
62%
39%
—
Pages / visit
2.2
1.1
1.8
—
Visit duration
1m 04s
1m 41s
14s
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Traffic sources
● Direct 76% · ● Referral 24%
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—
—
LangflowUnitlab AnnotateStack AILangdock
073.8K147.7K221.5K295.3KLangflow · 295.3KLangflow · 247KLangflow · 269.8KLangflow · 226.5KLangflow · 239.5KLangflow · 229.4KLangflow · 243.6KLangflow · 216.8KLangflow · 215.3KUnitlab 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 · 6.3K1K10K100K1MLangflow · 295.3KLangflow · 247KLangflow · 269.8KLangflow · 226.5KLangflow · 239.5KLangflow · 229.4KLangflow · 243.6KLangflow · 216.8KLangflow · 215.3KUnitlab 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
Free
Freemium
Freemium
Freemium
Starting price
Free
$89per month · free tier available
Free tier
€25per month
Free tier
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Free trial
–
–
API access
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Plans
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Free FreeActive $99/moPro $195/mo
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Trial FreeBusiness €25/moEnterprise CustomWorkflows Business add-on €539/mo+1 more
Capabilities input → output
Input
Text
ImagesVideoTextDocumentsAudio
DataTextDocuments
TextDocumentsCode
Output
Apps
Data
Apps
TextCode
Skill level
Advanced
Advanced
Intermediate
Intermediate
Categories
Chatbots & CompanionsDevelopment & CodeProductivity & OfficeAI Agent+3 more
Development & CodeAI Developer Tools
Development & CodeProductivity & OfficeAI AgentAI Workflow+1 more
Chatbots & CompanionsProductivity & OfficeAI AgentAI Chatbot+1 more
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
9
7
7
7
Agents
–
Workflows
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Agent creation
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No-code
–
–
Chatbots
–
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APIs
–
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Data labeling
–
–
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Image annotation
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–
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Business automation
–
–
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Developer tools
–
–
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Development
–
–
–
Image segmentation
–
–
–
LLM development
–
–
–
Object identification
–
–
–
Process automation
–
–
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Business productivity
–
–
–
Data quality control
–
–
–
Finance workflow automation
–
–
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OCR
–
–
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Self hosted
–
–
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Video analysis
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–
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 0
▲ 0
▲ 0
Saves
0
0
0
0
Reviews
0
0
0
0
Prompts
0
0
0
0
Verified listing
–
–
–
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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.