Stack AI vs Haystack vs ChatNode 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
Haystack
Competitor 2
ChatNode
Competitor 3
Voiceflow
Compare
4 tools · best value per row highlighted
Your tool Stack AI
stack-ai.com
Connect AI models visually
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Competitor Haystack
haystack.deepset.ai
Haystack is an open-source AI orchestration framework from deepset for building production-grade LLM applications and agents.
Make main 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 Voiceflow
voiceflow.com
Design conversations visually
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
6.3Kvisits/mo
—
7.9Kvisits/mo
385Kvisits/mo
MoM change
▼ 57.9%
—
▼ 56.0%
▼ 5.8%
6-month growth
-93.7%
—
-13.9%
-35.3%
Global rank web
#1,700,092
—
#1,061,283
#93,201
Avg. last 3 months
13.9K
—
12.2K
407.5K
Bounce rate lower is better
39%
—
39%
38%
Pages / visit
1.8
—
4.9
5.2
Visit duration
14s
—
2m 20s
3m 07s
Traffic sources
—
—
● Direct 97% · ● Mail 3%
● Direct 75% · ● Referral 24%
Stack AIHaystackChatNodeVoiceflow
0150K300K450.1K600.1KStack 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 · 6.3KChatNode · 11.7KChatNode · 6.7KChatNode · 10KChatNode · 9.2KChatNode · 4.6KChatNode · 10.4KChatNode · 10.6KChatNode · 18KChatNode · 7.9KVoiceflow · 600.1KVoiceflow · 574.1KVoiceflow · 561.6KVoiceflow · 513.7KVoiceflow · 594.8KVoiceflow · 462.6KVoiceflow · 454KVoiceflow · 429.1KVoiceflow · 408.5KVoiceflow · 385K1K10K100K1MStack 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 · 6.3KChatNode · 11.7KChatNode · 6.7KChatNode · 10KChatNode · 9.2KChatNode · 4.6KChatNode · 10.4KChatNode · 10.6KChatNode · 18KChatNode · 7.9KVoiceflow · 600.1KVoiceflow · 574.1KVoiceflow · 561.6KVoiceflow · 513.7KVoiceflow · 594.8KVoiceflow · 462.6KVoiceflow · 454KVoiceflow · 429.1KVoiceflow · 408.5KVoiceflow · 385KNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
—
Free Trial
Freemium
Starting price
Free tier
—
$35per month
Free tier
Free tier
–
–
Free trial
–
API access
–
Plans
—
—
Lite $35/moStandard $89/moScale $377/moEnterprise Custom
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Capabilities input → output
Input
DataDocumentsText
CodeDocuments
DocumentsTextWeb pages
DocumentsText
Output
Apps
Apps
Apps
Apps
Skill level
Intermediate
Advanced
Intermediate
Intermediate
Categories
Development & CodeProductivity & OfficeAI AgentAI Workflow+1 more
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Business & MarketingChatbots & CompanionsProductivity & OfficeAI Agent+2 more
Business & MarketingChatbots & CompanionsProductivity & OfficeAI Agent+3 more
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
7
7
9
13
Agents
Agent creation
–
Customer support
–
–
Customer support chatbot
–
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Chatbots
–
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No-code
–
–
Chatbot building
–
–
Website to chatbot
–
–
LLM development
–
–
–
RAG
–
–
–
Voice agents
–
–
–
Workflows
–
–
–
Business automation
–
–
–
Call agents
–
–
–
Call center automation
–
–
–
Calls
–
–
–
Customer support automation
–
–
–
Developer tools
–
–
–
Knowledge bases
–
–
–
Process automation
–
–
–
Agent memory
–
–
–
Call answering
–
–
–
Chatbot integration
–
–
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Finance workflow automation
–
–
–
Self hosted
–
–
–
Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 0
▲ 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.