Dify vs ChatNode vs pgvector vs Stack AI

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

Your tool
Dify
vs
Competitor 1
ChatNode
Competitor 2
pgvector
Competitor 3
Stack AI
Compare
4 tools · best value per row highlighted
Your tool Dify
dify.ai
AI apps without code
Remove
Competitor ChatNode
chatnode.ai
ChatNode builds AI customer service agents that handle support queries and execute actions through API calls
Make main Remove
Competitor pgvector
github.com
pgvector is an open-source extension that adds vector similarity search to Postgres.
Make main Remove
Competitor Stack AI
stack-ai.com
Connect AI models visually
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
1Mvisits/mo
7.9Kvisits/mo
—
6.3Kvisits/mo
MoM change
▼ 16.6%
▼ 56.0%
—
▼ 57.9%
6-month growth
-30.6%
-13.9%
—
-93.7%
Global rank web
#39,510
#1,061,283
—
#1,700,092
Avg. last 3 months
1.1M
12.2K
—
13.9K
Bounce rate lower is better
41%
39%
—
39%
Pages / visit
4.4
4.9
—
1.8
Visit duration
6m 40s
2m 20s
—
14s
Traffic sources
● Direct 84% · ● Referral 15%
● Direct 97% · ● Mail 3%
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—
DifyChatNodepgvectorStack AI
0368.2K736.4K1.1M1.5MDify · 1.1MDify · 1.2MDify · 1.3MDify · 1.1MDify · 1.5MDify · 1.2MDify · 1.1MDify · 1.2MDify · 1.2MDify · 1MChatNode · 11.7KChatNode · 6.7KChatNode · 10KChatNode · 9.2KChatNode · 4.6KChatNode · 10.4KChatNode · 10.6KChatNode · 18KChatNode · 7.9KStack 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 · 6.3K1K10K100K1M10MDify · 1.1MDify · 1.2MDify · 1.3MDify · 1.1MDify · 1.5MDify · 1.2MDify · 1.1MDify · 1.2MDify · 1.2MDify · 1MChatNode · 11.7KChatNode · 6.7KChatNode · 10KChatNode · 9.2KChatNode · 4.6KChatNode · 10.4KChatNode · 10.6KChatNode · 18KChatNode · 7.9KStack 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 · 6.3KNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Free Trial
Free
Freemium
Starting price
$590per month · free tier available
$35per month
Free
Free tier
Free tier
–
Free trial
–
–
API access
–
Plans
Sandbox FreeProfessional $590/yrTeam $1,590/yrEnterprise Custom
Lite $35/moStandard $89/moScale $377/moEnterprise Custom
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Capabilities input → output
Input
DocumentsText
DocumentsTextWeb pages
Data
DataDocumentsText
Output
Apps
Apps
Data
Apps
Skill level
Intermediate
Intermediate
Advanced
Intermediate
Categories
Chatbots & CompanionsDevelopment & CodeProductivity & OfficeAI Agent+4 more
Business & MarketingChatbots & CompanionsProductivity & OfficeAI Agent+2 more
Development & CodeAI Developer Tools
Development & CodeProductivity & OfficeAI AgentAI Workflow+1 more
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
9
9
7
7
Agents
–
No-code
–
–
Workflows
–
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Agent creation
–
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Chatbots
–
–
Developer tools
–
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Customer support
–
–
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Customer support chatbot
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–
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Vector databases
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–
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Vector indexes
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–
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Business automation
–
–
–
Customer support automation
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–
–
Knowledge bases
–
–
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LLM development
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PostgreSQL assistance
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–
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Process automation
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–
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Website to chatbot
–
–
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Chatbot building
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–
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Chatbot integration
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Development
–
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Finance workflow automation
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–
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Productivity
–
–
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RAG
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–
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SQL
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–
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Self hosted
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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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–
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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.