Stack AI vs Chatbase vs pgvector vs Activepieces

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

Your tool
Stack AI
vs
Competitor 1
Chatbase
Competitor 2
pgvector
Competitor 3
Activepieces
Compare
4 tools · best value per row highlighted
Your tool Stack AI
stack-ai.com
Connect AI models visually
Remove
Competitor Chatbase
chatbase.co
Train chatbots on your content
Make main Remove
Competitor pgvector
github.com
pgvector is an open-source extension that adds vector similarity search to Postgres.
Make main Remove
Competitor Activepieces
activepieces.com
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
6.3Kvisits/mo
402.2Kvisits/mo
—
221.7Kvisits/mo
MoM change
▼ 57.9%
▲ 2.0%
—
▲ 1.8%
6-month growth
-93.7%
-12.4%
—
-10.0%
Global rank web
#1,700,092
#84,220
—
#174,361
Avg. last 3 months
13.9K
412.6K
—
226.6K
Bounce rate lower is better
39%
44%
—
39%
Pages / visit
1.8
6.9
—
3.8
Visit duration
14s
4m 34s
—
2m 39s
Traffic sources
—
● Direct 81% · ● Referral 15%
—
● Direct 74% · ● Referral 24%
Stack AIChatbasepgvectorActivepieces
0147.7K295.3K443K590.6KStack 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 · 6.3KChatbase · 590.6KChatbase · 583.4KChatbase · 309.5KChatbase · 281.8KChatbase · 459KChatbase · 473.7KChatbase · 444.7KChatbase · 441.2KChatbase · 394.5KChatbase · 402.2KActivepieces · 209.7KActivepieces · 239.2KActivepieces · 236KActivepieces · 187.9KActivepieces · 246.2KActivepieces · 223.6KActivepieces · 218.4KActivepieces · 240.1KActivepieces · 217.9KActivepieces · 221.7K1K10K100K1MStack 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 · 6.3KChatbase · 590.6KChatbase · 583.4KChatbase · 309.5KChatbase · 281.8KChatbase · 459KChatbase · 473.7KChatbase · 444.7KChatbase · 441.2KChatbase · 394.5KChatbase · 402.2KActivepieces · 209.7KActivepieces · 239.2KActivepieces · 236KActivepieces · 187.9KActivepieces · 246.2KActivepieces · 223.6KActivepieces · 218.4KActivepieces · 240.1KActivepieces · 217.9KActivepieces · 221.7KNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Freemium
Free
Freemium
Starting price
Free tier
$40per month · free tier available
Free
$20per month · free tier available
Free tier
Free trial
–
–
API access
–
–
Plans
—
Free FreeHobby $40/moStandard $150/moPro $500/mo+1 more
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Free FreePlus $20/moTeam $200/mo
Capabilities input → output
Input
DataDocumentsText
DocumentsTextWeb pages
Data
Text
Output
Apps
AppsText
Data
Apps
Skill level
Intermediate
Intermediate
Advanced
Intermediate
Categories
Development & CodeProductivity & OfficeAI AgentAI Workflow+1 more
Business & MarketingChatbots & CompanionsAI ChatbotAI Customer Service+1 more
Development & CodeAI Developer Tools
Productivity & OfficeAI AgentAI Workflow
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
7
10
7
4
Agents
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No-code
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Workflows
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–
Agent creation
–
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Chatbot building
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–
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Chatbots
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–
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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
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–
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Chatbot integration
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–
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Developer tools
–
–
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PostgreSQL assistance
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–
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Process automation
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–
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Shopify customer support
–
–
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Finance workflow automation
–
–
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RAG
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–
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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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–
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 0
▲ 0
▲ 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.