LangChain vs Semantic Kernel vs LlamaIndex vs CrewAI

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

Your tool
LangChain
vs
Competitor 1
Semantic Kernel
Competitor 2
LlamaIndex
Competitor 3
CrewAI
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 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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Competitor LlamaIndex
llamaindex.ai
Connect AI to your data
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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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Traffic estimated monthly website traffic
Monthly visits
3.4Mvisits/mo
—
324Kvisits/mo
476.6Kvisits/mo
MoM change
▲ 0.7%
—
▼ 21.0%
▼ 10.3%
6-month growth
+21.0%
—
-29.5%
-5.3%
Global rank web
#13,384
—
#118,014
#107,487
Avg. last 3 months
3.3M
—
398.3K
564.3K
Bounce rate lower is better
42%
—
46%
46%
Pages / visit
6.2
—
2.8
2.6
Visit duration
5m 29s
—
1m 57s
1m 32s
Traffic sources
● Direct 73% · ● Referral 24%
—
● Direct 74% · ● Referral 20%
● Direct 75% · ● Referral 23%
LangChainSemantic KernelLlamaIndexCrewAI
0850.7K1.7M2.6M3.4MLangChain · 3MLangChain · 2.9MLangChain · 3.2MLangChain · 2.8MLangChain · 3.4MLangChain · 3.2MLangChain · 3.1MLangChain · 3.4MLangChain · 3.4MLlamaIndex · 438.2KLlamaIndex · 470.7KLlamaIndex · 444KLlamaIndex · 423.8KLlamaIndex · 459.5KLlamaIndex · 421.3KLlamaIndex · 455KLlamaIndex · 461KLlamaIndex · 410KLlamaIndex · 324KCrewAI · 408.9KCrewAI · 417.1KCrewAI · 521.4KCrewAI · 503.5KCrewAI · 610.1KCrewAI · 646.1KCrewAI · 685.2KCrewAI · 531.1KCrewAI · 476.6K100K1M10MLangChain · 3MLangChain · 2.9MLangChain · 3.2MLangChain · 2.8MLangChain · 3.4MLangChain · 3.2MLangChain · 3.1MLangChain · 3.4MLangChain · 3.4MLlamaIndex · 438.2KLlamaIndex · 470.7KLlamaIndex · 444KLlamaIndex · 423.8KLlamaIndex · 459.5KLlamaIndex · 421.3KLlamaIndex · 455KLlamaIndex · 461KLlamaIndex · 410KLlamaIndex · 324KCrewAI · 408.9KCrewAI · 417.1KCrewAI · 521.4KCrewAI · 503.5KCrewAI · 610.1KCrewAI · 646.1KCrewAI · 685.2KCrewAI · 531.1KCrewAI · 476.6KNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
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Freemium
Free
Starting price
$39per month · free tier available
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Free tier
Free
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
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Free FreeStarter Custom/moPro Custom/moEnterprise Custom/mo
Basic FreeEnterprise $0
Capabilities input → output
Input
CodeText
CodeText
DocumentsImages
Text
Output
Apps
Apps
DataText
AppsCode
Skill level
Advanced
Advanced
Advanced
Advanced
Categories
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Development & CodeProductivity & OfficeAI AgentAI Developer Tools+1 more
Development & CodeProductivity & OfficeAI AgentAI Developer Tools+2 more
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
6
2
12
9
Agents
Agent creation
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Developer tools
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Development
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LLM development
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Workflows
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Agent testing
–
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Agent collaboration
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–
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Data extraction
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–
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Document data extraction
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–
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Document processing
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–
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Agent management
–
–
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No-code
–
–
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OCR
–
–
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Text extraction
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–
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Information retrieval
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–
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Medical data extraction
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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
▲ 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.