LangChain vs Stack AI vs LlamaIndex

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
Suggested competitors for LangChain: CrewAI78% Langflow75% Flowise72% Haystack72% AutoGen70% Dify70% Semantic Kernel64% Eliza62%
Compare
3 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
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%
Global rank web
#13,384
#1,700,092
#118,014
Avg. last 3 months
3.3M
13.9K
398.3K
Bounce rate lower is better
42%
39%
46%
Pages / visit
6.2
1.8
2.8
Visit duration
5m 29s
14s
1m 57s
Traffic sources
● Direct 73% · ● Referral 24%
—
● Direct 74% · ● Referral 20%
LangChainStack AILlamaIndex
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
Starting price
$39per month · free tier available
Free tier
Free tier
Free tier
Free trial
–
–
API access
–
Plans
Developer FreePlus $39/moEnterprise Custom/mo
—
Free FreeStarter Custom/moPro Custom/moEnterprise Custom/mo
Capabilities input → output
Input
CodeText
DataDocumentsText
DocumentsImages
Output
Apps
Apps
DataText
Skill level
Advanced
Intermediate
Advanced
Categories
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Development & CodeProductivity & OfficeAI AgentAI Workflow+1 more
Development & CodeProductivity & OfficeAI AgentAI Developer Tools+1 more
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
6
5
12
Agents
Agent creation
–
LLM development
–
Developer tools
–
Workflows
–
Development
–
Data extraction
–
–
Document data extraction
–
–
Document processing
–
–
No-code
–
–
OCR
–
–
Text extraction
–
–
Agent testing
–
–
Finance workflow automation
–
–
Information retrieval
–
–
Medical data extraction
–
–
Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 1
▲ 0
▲ 0
Saves
0
0
0
Reviews
0
0
0
Prompts
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.