Stack AI vs InitRunner vs Langflow vs Agno

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

Your tool
Stack AI
vs
Competitor 1
IInitRunner
Competitor 2
Langflow
Competitor 3
Agno
Compare
4 tools · best value per row highlighted
Your tool Stack AI
stack-ai.com
Connect AI models visually
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Competitor IInitRunner
initrunner.ai
InitRunner is open source and free
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Competitor Langflow
langflow.org
Drag and drop AI
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Competitor Agno
agno.com
Agno is an agent platform that runs in your own cloud and covers the full lifecycle of building, serving and managing AI agents.
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Traffic estimated monthly website traffic
Monthly visits
6.3Kvisits/mo
—
215.3Kvisits/mo
—
MoM change
▼ 57.9%
—
▼ 0.7%
—
6-month growth
-93.7%
—
-4.9%
—
Global rank web
#1,700,092
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#217,191
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Avg. last 3 months
13.9K
—
225.2K
—
Bounce rate lower is better
39%
0%
44%
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Pages / visit
1.8
—
2.2
—
Visit duration
14s
—
1m 04s
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Traffic sources
—
—
● Direct 76% · ● Referral 24%
—
Stack AIInitRunnerLangflowAgno
073.8K147.7K221.5K295.3KStack 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 · 6.3KLangflow · 295.3KLangflow · 247KLangflow · 269.8KLangflow · 226.5KLangflow · 239.5KLangflow · 229.4KLangflow · 243.6KLangflow · 216.8KLangflow · 215.3K1K10K100K1MStack 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 · 6.3KLangflow · 295.3KLangflow · 247KLangflow · 269.8KLangflow · 226.5KLangflow · 239.5KLangflow · 229.4KLangflow · 243.6KLangflow · 216.8KLangflow · 215.3KNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Free
Free
Freemium
Starting price
Free tier
Free
Free
$150per month · free tier available
Free tier
Free trial
–
–
API access
Plans
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Free FreePro $150/moEnterprise Custom
Capabilities input → output
Input
DataDocumentsText
DocumentsText
Text
CodeText
Output
Apps
AppsText
Apps
Apps
Skill level
Intermediate
Advanced
Advanced
Advanced
Categories
Development & CodeProductivity & OfficeAI AgentAI Workflow+1 more
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Chatbots & CompanionsDevelopment & CodeProductivity & OfficeAI Agent+3 more
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Tasks what each tool can do · 2 shared · core   partial
Tasks covered
5
3
9
7
Agents
Agent creation
No-code
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Workflows
–
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Developer tools
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Agent memory
–
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Agent management
–
–
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Chatbots
–
–
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Development
–
–
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LLM development
–
–
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APIs
–
–
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Agent collaboration
–
–
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Agent testing
–
–
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Finance workflow automation
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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.