LangChain vs Stack AI vs LlamaIndex vs AutoGen

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

Your tool
LangChain
vs
Competitor 1
Stack AI
Competitor 2
LlamaIndex
Competitor 3
AutoGen
Compare
4 tools · best value per row highlighted
Your tool LangChain
langchain.com
Framework for building with large language models
Remove
Competitor Stack AI
stack-ai.com
Connect AI models visually
Make main Remove
Competitor LlamaIndex
llamaindex.ai
Connect AI to your data
Make main Remove
Competitor AutoGen
microsoft.github.io
AutoGen is an open-source framework from Microsoft for building AI agents and multi-agent applications.
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
3.4Mvisits/mo
6.3Kvisits/mo
324Kvisits/mo
—
MoM change
▲ 0.7%
▼ 57.9%
▼ 21.0%
—
6-month growth
+21.0%
-93.7%
-29.5%
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Global rank web
#13,384
#1,700,092
#118,014
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Avg. last 3 months
3.3M
13.9K
398.3K
—
Bounce rate lower is better
42%
39%
46%
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Pages / visit
6.2
1.8
2.8
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Visit duration
5m 29s
14s
1m 57s
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Traffic sources
● Direct 73% · ● Referral 24%
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● Direct 74% · ● Referral 20%
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LangChainStack AILlamaIndexAutoGen
0850.7K1.7M2.6M3.4MLangChain · 3MLangChain · 2.9MLangChain · 3.2MLangChain · 2.8MLangChain · 3.4MLangChain · 3.2MLangChain · 3.1MLangChain · 3.4MLangChain · 3.4MStack 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 · 6.3KLlamaIndex · 438.2KLlamaIndex · 470.7KLlamaIndex · 444KLlamaIndex · 423.8KLlamaIndex · 459.5KLlamaIndex · 421.3KLlamaIndex · 455KLlamaIndex · 461KLlamaIndex · 410KLlamaIndex · 324K1K10K100K1M10MLangChain · 3MLangChain · 2.9MLangChain · 3.2MLangChain · 2.8MLangChain · 3.4MLangChain · 3.2MLangChain · 3.1MLangChain · 3.4MLangChain · 3.4MStack 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 · 6.3KLlamaIndex · 438.2KLlamaIndex · 470.7KLlamaIndex · 444KLlamaIndex · 423.8KLlamaIndex · 459.5KLlamaIndex · 421.3KLlamaIndex · 455KLlamaIndex · 461KLlamaIndex · 410KLlamaIndex · 324KNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Freemium
Freemium
Free
Starting price
$39per month · free tier available
Free tier
Free tier
Free
Free tier
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
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Capabilities input → output
Input
CodeText
DataDocumentsText
DocumentsImages
CodeText
Output
Apps
Apps
DataText
AppsCode
Skill level
Advanced
Intermediate
Advanced
Advanced
Categories
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Development & CodeProductivity & OfficeAI AgentAI Workflow+1 more
Development & CodeProductivity & OfficeAI AgentAI Developer Tools+1 more
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
6
7
12
7
Agents
Agent creation
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Developer tools
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LLM development
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No-code
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Workflows
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Development
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Data extraction
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Document data extraction
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Document processing
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Agent collaboration
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Business automation
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OCR
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Process automation
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Text extraction
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Agent testing
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Finance workflow automation
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Information retrieval
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Medical data extraction
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Self hosted
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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.