Stack AI vs pgvector vs Dify vs Chatbase

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

Your tool
Stack AI
vs
Competitor 1
pgvector
Competitor 2
Dify
Competitor 3
Chatbase
Compare
4 tools · best value per row highlighted
Your tool Stack AI
stack-ai.com
Connect AI models visually
Remove
Competitor pgvector
github.com
pgvector is an open-source extension that adds vector similarity search to Postgres.
Make main Remove
Competitor Dify
dify.ai
AI apps without code
Make main Remove
Competitor Chatbase
chatbase.co
Train chatbots on your content
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
6.3Kvisits/mo
—
1Mvisits/mo
402.2Kvisits/mo
MoM change
▼ 57.9%
—
▼ 16.6%
▲ 2.0%
6-month growth
-93.7%
—
-30.6%
-12.4%
Global rank web
#1,700,092
—
#39,510
#84,220
Avg. last 3 months
13.9K
—
1.1M
412.6K
Bounce rate lower is better
39%
—
41%
44%
Pages / visit
1.8
—
4.4
6.9
Visit duration
14s
—
6m 40s
4m 34s
Traffic sources
—
—
● Direct 84% · ● Referral 15%
● Direct 81% · ● Referral 15%
Stack AIpgvectorDifyChatbase
0368.2K736.4K1.1M1.5MStack 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 · 6.3KDify · 1.1MDify · 1.2MDify · 1.3MDify · 1.1MDify · 1.5MDify · 1.2MDify · 1.1MDify · 1.2MDify · 1.2MDify · 1MChatbase · 590.6KChatbase · 583.4KChatbase · 309.5KChatbase · 281.8KChatbase · 459KChatbase · 473.7KChatbase · 444.7KChatbase · 441.2KChatbase · 394.5KChatbase · 402.2K1K10K100K1M10MStack 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 · 6.3KDify · 1.1MDify · 1.2MDify · 1.3MDify · 1.1MDify · 1.5MDify · 1.2MDify · 1.1MDify · 1.2MDify · 1.2MDify · 1MChatbase · 590.6KChatbase · 583.4KChatbase · 309.5KChatbase · 281.8KChatbase · 459KChatbase · 473.7KChatbase · 444.7KChatbase · 441.2KChatbase · 394.5KChatbase · 402.2KNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Free
Freemium
Freemium
Starting price
Free tier
Free
$590per month · free tier available
$40per month · free tier available
Free tier
Free trial
–
–
API access
–
Plans
—
—
Sandbox FreeProfessional $590/yrTeam $1,590/yrEnterprise Custom
Free FreeHobby $40/moStandard $150/moPro $500/mo+1 more
Capabilities input → output
Input
DataDocumentsText
Data
DocumentsText
DocumentsTextWeb pages
Output
Apps
Data
Apps
AppsText
Skill level
Intermediate
Advanced
Intermediate
Intermediate
Categories
Development & CodeProductivity & OfficeAI AgentAI Workflow+1 more
Development & CodeAI Developer Tools
Chatbots & CompanionsDevelopment & CodeProductivity & OfficeAI Agent+4 more
Business & MarketingChatbots & CompanionsAI ChatbotAI Customer Service+1 more
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
7
7
9
10
Agents
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No-code
–
Workflows
–
–
Agent creation
–
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Chatbots
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–
Developer tools
–
–
Chatbot building
–
–
–
Customer support
–
–
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Customer support chatbot
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–
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Vector databases
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–
–
Vector indexes
–
–
–
Business automation
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–
–
Chatbot integration
–
–
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LLM development
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–
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PostgreSQL assistance
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–
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Process automation
–
–
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Shopify customer support
–
–
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Development
–
–
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Finance workflow automation
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–
–
Productivity
–
–
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RAG
–
–
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SQL
–
–
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Sales
–
–
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Self hosted
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–
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Website to chatbot
–
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 0
▲ 1
▲ 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.