Stack AI vs Dify vs Flowise vs Voiceflow

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

Your tool
Stack AI
vs
Competitor 1
Dify
Competitor 2
Flowise
Competitor 3
Voiceflow
Compare
4 tools · best value per row highlighted
Your tool Stack AI
stack-ai.com
Connect AI models visually
Remove
Competitor Dify
dify.ai
AI apps without code
Make main Remove
Competitor Flowise
flowiseai.com
No-code AI workflows
Make main Remove
Competitor Voiceflow
voiceflow.com
Design conversations visually
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
6.3Kvisits/mo
1Mvisits/mo
168.3Kvisits/mo
385Kvisits/mo
MoM change
▼ 57.9%
▼ 16.6%
▼ 27.6%
▼ 5.8%
6-month growth
-93.7%
-30.6%
-14.1%
-35.3%
Global rank web
#1,700,092
#39,510
#239,649
#93,201
Avg. last 3 months
13.9K
1.1M
203.8K
407.5K
Bounce rate lower is better
39%
41%
43%
38%
Pages / visit
1.8
4.4
2.8
5.2
Visit duration
14s
6m 40s
1m 23s
3m 07s
Traffic sources
—
● Direct 84% · ● Referral 15%
● Direct 79% · ● Referral 19%
● Direct 75% · ● Referral 24%
Stack AIDifyFlowiseVoiceflow
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 · 1MFlowise · 254.4KFlowise · 249KFlowise · 240.1KFlowise · 195.9KFlowise · 226.4KFlowise · 223.8KFlowise · 210.5KFlowise · 232.5KFlowise · 168.3KVoiceflow · 600.1KVoiceflow · 574.1KVoiceflow · 561.6KVoiceflow · 513.7KVoiceflow · 594.8KVoiceflow · 462.6KVoiceflow · 454KVoiceflow · 429.1KVoiceflow · 408.5KVoiceflow · 385K1K10K100K1M10MStack 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 · 1MFlowise · 254.4KFlowise · 249KFlowise · 240.1KFlowise · 195.9KFlowise · 226.4KFlowise · 223.8KFlowise · 210.5KFlowise · 232.5KFlowise · 168.3KVoiceflow · 600.1KVoiceflow · 574.1KVoiceflow · 561.6KVoiceflow · 513.7KVoiceflow · 594.8KVoiceflow · 462.6KVoiceflow · 454KVoiceflow · 429.1KVoiceflow · 408.5KVoiceflow · 385KNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Freemium
Freemium
Freemium
Starting price
Free tier
$590per month · free tier available
$35per month · free tier available
Free tier
Free tier
Free trial
–
–
API access
Plans
—
Sandbox FreeProfessional $590/yrTeam $1,590/yrEnterprise Custom
Free FreeStarter $35/moPro $65/mo
—
Capabilities input → output
Input
DataDocumentsText
DocumentsText
DocumentsText
DocumentsText
Output
Apps
Apps
Apps
Apps
Skill level
Intermediate
Intermediate
Advanced
Intermediate
Categories
Development & CodeProductivity & OfficeAI AgentAI Workflow+1 more
Chatbots & CompanionsDevelopment & CodeProductivity & OfficeAI Agent+4 more
Chatbots & CompanionsDevelopment & CodeProductivity & OfficeAI Agent+3 more
Business & MarketingChatbots & CompanionsProductivity & OfficeAI Agent+3 more
Tasks what each tool can do · 2 shared · core   partial
Tasks covered
3
9
3
13
Agents
No-code
Workflows
–
Agent creation
–
–
Chatbots
–
–
Customer support
–
–
–
Customer support chatbot
–
–
–
Voice agents
–
–
–
Call agents
–
–
–
Call center automation
–
–
–
Calls
–
–
–
Chatbot building
–
–
–
Developer tools
–
–
–
LLM development
–
–
–
Call answering
–
–
–
Development
–
–
–
Productivity
–
–
–
Website to chatbot
–
–
–
Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 1
▲ 0
▲ 1
Saves
0
0
0
0
Reviews
0
0
0
0
Prompts
0
0
0
0
Verified listing
–
–
–
–

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.