LangChain vs Unitlab Annotate vs CrewAI vs Semantic Kernel

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

Your tool
LangChain
vs
Competitor 1
Unitlab Annotate
Competitor 2
CrewAI
Competitor 3
Semantic Kernel
Compare
4 tools · best value per row highlighted
Your tool LangChain
langchain.com
Framework for building with large language models
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Competitor Unitlab Annotate
unitlab.ai
Make main Remove
Competitor CrewAI
crewai.com
CrewAI is a multi-agent platform that covers the full agent lifecycle for businesses: discover what to automate, build agents, govern them in production and optimize them over time.
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Competitor Semantic Kernel
learn.microsoft.com
Semantic Kernel is a lightweight, open-source development kit from Microsoft for building AI agents and adding AI models to existing C#, Python or Java codebases.
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Traffic estimated monthly website traffic
Monthly visits
3.4Mvisits/mo
7.2Kvisits/mo
476.6Kvisits/mo
—
MoM change
▲ 0.7%
▲ 76.6%
▼ 10.3%
—
6-month growth
+21.0%
+37.1%
-5.3%
—
Global rank web
#13,384
#2,769,635
#107,487
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Avg. last 3 months
3.3M
5.1K
564.3K
—
Bounce rate lower is better
42%
62%
46%
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Pages / visit
6.2
1.1
2.6
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Visit duration
5m 29s
1m 41s
1m 32s
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Traffic sources
● Direct 73% · ● Referral 24%
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● Direct 75% · ● Referral 23%
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LangChainUnitlab AnnotateCrewAISemantic Kernel
0850.7K1.7M2.6M3.4MLangChain · 3MLangChain · 2.9MLangChain · 3.2MLangChain · 2.8MLangChain · 3.4MLangChain · 3.2MLangChain · 3.1MLangChain · 3.4MLangChain · 3.4MUnitlab Annotate · 6.4KUnitlab Annotate · 5.3KUnitlab Annotate · 4.3KUnitlab Annotate · 4.1KUnitlab Annotate · 4.1KUnitlab Annotate · 4.1KUnitlab Annotate · 7.2KCrewAI · 408.9KCrewAI · 417.1KCrewAI · 521.4KCrewAI · 503.5KCrewAI · 610.1KCrewAI · 646.1KCrewAI · 685.2KCrewAI · 531.1KCrewAI · 476.6K1K10K100K1M10MLangChain · 3MLangChain · 2.9MLangChain · 3.2MLangChain · 2.8MLangChain · 3.4MLangChain · 3.2MLangChain · 3.1MLangChain · 3.4MLangChain · 3.4MUnitlab Annotate · 6.4KUnitlab Annotate · 5.3KUnitlab Annotate · 4.3KUnitlab Annotate · 4.1KUnitlab Annotate · 4.1KUnitlab Annotate · 4.1KUnitlab Annotate · 7.2KCrewAI · 408.9KCrewAI · 417.1KCrewAI · 521.4KCrewAI · 503.5KCrewAI · 610.1KCrewAI · 646.1KCrewAI · 685.2KCrewAI · 531.1KCrewAI · 476.6KNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Freemium
Free
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Starting price
$39per month · free tier available
$89per month · free tier available
Free
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Free tier
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Free trial
–
–
–
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API access
–
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Plans
Developer FreePlus $39/moEnterprise Custom/mo
Free FreeActive $99/moPro $195/mo
Basic FreeEnterprise $0
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Capabilities input → output
Input
CodeText
AudioDocumentsImagesTextVideo
Text
CodeText
Output
Apps
Data
AppsCode
Apps
Skill level
Advanced
Advanced
Advanced
Advanced
Categories
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Development & CodeAI Developer Tools
Development & CodeProductivity & OfficeAI AgentAI Developer Tools+2 more
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
6
1
9
2
Agent creation
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Agents
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Developer tools
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Development
–
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Agent testing
–
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Agent collaboration
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–
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LLM development
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–
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Agent management
–
–
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No-code
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–
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Workflows
–
–
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OCR
–
–
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 1
▲ 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.