Langflow vs FastGPT vs Stack AI vs LangChain

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

Your tool
Langflow
vs
Competitor 1
FastGPT
Competitor 2
Stack AI
Competitor 3
LangChain
Compare
4 tools · best value per row highlighted
Your tool Langflow
langflow.org
Drag and drop AI
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Competitor FastGPT
fastgpt.io
FastGPT is an open-source platform for building AI agents and knowledge-base applications.
Make main Remove
Competitor Stack AI
stack-ai.com
Connect AI models visually
Make main Remove
Competitor LangChain
langchain.com
Framework for building with large language models
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
215.3Kvisits/mo
—
6.3Kvisits/mo
3.4Mvisits/mo
MoM change
▼ 0.7%
—
▼ 57.9%
▲ 0.7%
6-month growth
-4.9%
—
-93.7%
+21.0%
Global rank web
#217,191
—
#1,700,092
#13,384
Avg. last 3 months
225.2K
—
13.9K
3.3M
Bounce rate lower is better
44%
—
39%
42%
Pages / visit
2.2
—
1.8
6.2
Visit duration
1m 04s
—
14s
5m 29s
Traffic sources
● Direct 76% · ● Referral 24%
—
—
● Direct 73% · ● Referral 24%
LangflowFastGPTStack AILangChain
0850.7K1.7M2.6M3.4MLangflow · 295.3KLangflow · 247KLangflow · 269.8KLangflow · 226.5KLangflow · 239.5KLangflow · 229.4KLangflow · 243.6KLangflow · 216.8KLangflow · 215.3KStack 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 · 6.3KLangChain · 3MLangChain · 2.9MLangChain · 3.2MLangChain · 2.8MLangChain · 3.4MLangChain · 3.2MLangChain · 3.1MLangChain · 3.4MLangChain · 3.4M1K10K100K1M10MLangflow · 295.3KLangflow · 247KLangflow · 269.8KLangflow · 226.5KLangflow · 239.5KLangflow · 229.4KLangflow · 243.6KLangflow · 216.8KLangflow · 215.3KStack 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 · 6.3KLangChain · 3MLangChain · 2.9MLangChain · 3.2MLangChain · 2.8MLangChain · 3.4MLangChain · 3.2MLangChain · 3.1MLangChain · 3.4MLangChain · 3.4MNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Free
Freemium
Freemium
Freemium
Starting price
Free
CNY 99per month · free tier available
Free tier
$39per month · free tier available
Free tier
Free trial
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–
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API access
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Plans
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Free Edition FreeBasic Edition $99/moAdvanced Edition $599/moCustom Edition Custom
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Developer FreePlus $39/moEnterprise Custom/mo
Capabilities input → output
Input
Text
DocumentsTextWeb pages
DataDocumentsText
CodeText
Output
Apps
Apps
Apps
Apps
Skill level
Advanced
Advanced
Intermediate
Advanced
Categories
Chatbots & CompanionsDevelopment & CodeProductivity & OfficeAI Agent+3 more
Chatbots & CompanionsEducation & LearningProductivity & OfficeAI Agent+2 more
Development & CodeProductivity & OfficeAI AgentAI Workflow+1 more
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Tasks what each tool can do · 2 shared · core   partial
Tasks covered
9
9
7
6
Agents
Agent creation
Workflows
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No-code
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LLM development
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Chatbots
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Developer tools
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Development
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Knowledge bases
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RAG
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–
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Business automation
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–
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Chatbot building
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–
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Process automation
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–
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Self hosted
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–
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APIs
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Agent testing
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Customer support chatbot
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Finance workflow automation
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 0
▲ 0
▲ 1
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.