Stack AI vs illumi vs Haystack vs Microsoft Copilot Studio

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

Your tool
Stack AI
vs
Competitor 1
illumi
Competitor 2
Haystack
Competitor 3
Microsoft Copilot Studio
Compare
4 tools · best value per row highlighted
Your tool Stack AI
stack-ai.com
Connect AI models visually
Remove
Competitor illumi
illumi.one
Make main Remove
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 Microsoft Copilot Studio
microsoft.com
Builders can add conversational chat or voice agents, give them autonomous capabilities such as planning and escalating work items, and connect them to business data through more than 1,500 pre-bui...
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
6.3Kvisits/mo
4.8Kvisits/mo
—
—
MoM change
▼ 57.9%
▲ 13.4%
—
—
6-month growth
-93.7%
-37.4%
—
—
Global rank web
#1,700,092
#3,948,892
—
—
Avg. last 3 months
13.9K
4.7K
—
—
Bounce rate lower is better
39%
34%
—
—
Pages / visit
1.8
2.1
—
—
Visit duration
14s
47s
—
—
Traffic sources
—
—
—
—
Stack AIillumiHaystackMicrosoft Copilot Studio
042K84K126K167.9KStack 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 · 6.3Killumi · 3.9Killumi · 6.1Killumi · 5.9Killumi · 6.7Killumi · 7.7Killumi · 5.9Killumi · 6.9Killumi · 4.9Killumi · 4.2Killumi · 4.8K1K10K100K1MStack 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 · 6.3Killumi · 3.9Killumi · 6.1Killumi · 5.9Killumi · 6.7Killumi · 7.7Killumi · 5.9Killumi · 6.9Killumi · 4.9Killumi · 4.2Killumi · 4.8KNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Freemium
—
Free Trial
Starting price
Free tier
$12per month · free tier available
—
$18per month
Free tier
–
–
Free trial
–
API access
–
–
–
Plans
—
Starter FreePro $12/moTeam CustomDesign Partner $0
—
Microsoft 365 Business Standard with Copilot $23.50/moMicrosoft 365 Copilot Business $18/moMicrosoft 365 Business Premium with Copilot $32/mo
Capabilities input → output
Input
DataDocumentsText
DocumentsText
CodeDocuments
DataDocumentsText
Output
Apps
Text
Apps
Apps
Skill level
Intermediate
Beginner-friendly
Advanced
Intermediate
Categories
Development & CodeProductivity & OfficeAI AgentAI Workflow+1 more
Chatbots & CompanionsProductivity & OfficeAI ChatbotAI Mind Mapping
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Chatbots & CompanionsDevelopment & CodeProductivity & OfficeAI Agent+3 more
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
7
5
7
11
Agents
–
Agent creation
–
No-code
–
–
Workflows
–
–
LLM development
–
–
–
RAG
–
–
–
Visual workspace
–
–
–
Agent management
–
–
–
Business automation
–
–
–
Chatbot building
–
–
–
Chatbots
–
–
–
Developer tools
–
–
–
MCP
–
–
–
Mind maps
–
–
–
Process automation
–
–
–
Team collaboration
–
–
–
Voice agents
–
–
–
Agent memory
–
–
–
Customer support chatbot
–
–
–
Finance workflow automation
–
–
–
Knowledge maps
–
–
–
Self hosted
–
–
–
Virtual workspace
–
–
–
Voice chatting
–
–
–
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
–
–
–
–

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.