Dify vs Stack AI vs Harpa vs LangChain

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

Your tool
Dify
vs
Competitor 1
Stack AI
Competitor 2
Harpa
Competitor 3
LangChain
Compare
4 tools · best value per row highlighted
Your tool Dify
dify.ai
AI apps without code
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Competitor Stack AI
stack-ai.com
Connect AI models visually
Make main Remove
Competitor Harpa
harpa.ai
HARPA AI is a Chrome Extension and NoCode RPA platform that automates web tasks to save time and money. It uses a hybrid AI engine built on ChatGPT and Machine Learning to perform tasks such as provid
Make main Remove
Competitor LangChain
langchain.com
Framework for building with large language models
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
1Mvisits/mo
6.3Kvisits/mo
281.1Kvisits/mo
3.4Mvisits/mo
MoM change
▼ 16.6%
▼ 57.9%
▼ 18.4%
▲ 0.7%
6-month growth
-30.6%
-93.7%
-55.5%
+21.0%
Global rank web
#39,510
#1,700,092
#170,120
#13,384
Avg. last 3 months
1.1M
13.9K
326.3K
3.3M
Bounce rate lower is better
41%
39%
53%
42%
Pages / visit
4.4
1.8
1.6
6.2
Visit duration
6m 40s
14s
1m 09s
5m 29s
Traffic sources
● Direct 84% · ● Referral 15%
—
● Direct 95% · ● Referral 4%
● Direct 73% · ● Referral 24%
DifyStack AIHarpaLangChain
0850.7K1.7M2.6M3.4MDify · 1.1MDify · 1.2MDify · 1.3MDify · 1.1MDify · 1.5MDify · 1.2MDify · 1.1MDify · 1.2MDify · 1.2MDify · 1MStack 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 · 6.3KHarpa · 269.4KHarpa · 340KHarpa · 397.4KHarpa · 367.5KHarpa · 631.4KHarpa · 457.2KHarpa · 421.2KHarpa · 353.4KHarpa · 344.4KHarpa · 281.1KLangChain · 3MLangChain · 2.9MLangChain · 3.2MLangChain · 2.8MLangChain · 3.4MLangChain · 3.2MLangChain · 3.1MLangChain · 3.4MLangChain · 3.4M1K10K100K1M10MDify · 1.1MDify · 1.2MDify · 1.3MDify · 1.1MDify · 1.5MDify · 1.2MDify · 1.1MDify · 1.2MDify · 1.2MDify · 1MStack 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 · 6.3KHarpa · 269.4KHarpa · 340KHarpa · 397.4KHarpa · 367.5KHarpa · 631.4KHarpa · 457.2KHarpa · 421.2KHarpa · 353.4KHarpa · 344.4KHarpa · 281.1KLangChain · 3MLangChain · 2.9MLangChain · 3.2MLangChain · 2.8MLangChain · 3.4MLangChain · 3.2MLangChain · 3.1MLangChain · 3.4MLangChain · 3.4MNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Freemium
Freemium
Freemium
Starting price
$590per month · free tier available
Free tier
€14.3per month
$39per month · free tier available
Free tier
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Free trial
–
–
–
API access
–
–
Plans
Sandbox FreeProfessional $590/yrTeam $1,590/yrEnterprise Custom
—
Everyone €14.30/moPro €19.60/moLife €238
Developer FreePlus $39/moEnterprise Custom/mo
Capabilities input → output
Input
DocumentsText
DataDocumentsText
TextWeb pages
CodeText
Output
Apps
Apps
DataText
Apps
Skill level
Intermediate
Intermediate
Intermediate
Advanced
Categories
Chatbots & CompanionsDevelopment & CodeProductivity & OfficeAI Agent+4 more
Development & CodeProductivity & OfficeAI AgentAI Workflow+1 more
Chatbots & CompanionsDevelopment & CodeProductivity & OfficeVideo Editing+7 more
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
9
7
10
6
Agents
Agent creation
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No-code
–
–
Workflows
–
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LLM development
–
–
Developer tools
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Chatbots
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Development
–
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Chrome extensions
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–
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Business automation
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–
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Email automation
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–
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Process automation
–
–
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Summarizing
–
–
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Video summaries
–
–
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Web scraping
–
–
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Agent testing
–
–
–
Email management
–
–
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Finance workflow automation
–
–
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Productivity
–
–
–
SEO
–
–
–
Web browsing
–
–
–
Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 1
▲ 0
▲ 1
▲ 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.