Stack AI vs CometAPI vs OpenRouter vs Dify

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

Your tool
Stack AI
vs
Competitor 1
CometAPI
Competitor 2
OpenRouter
Competitor 3
Dify
Compare
4 tools · best value per row highlighted
Your tool Stack AI
stack-ai.com
Connect AI models visually
Remove
Competitor CometAPI
cometapi.com
CometAPI functions as an aggregation layer that sits between your application and hundreds of AI model providers
Make main Remove
Competitor OpenRouter
openrouter.ai
Every model, one endpoint
Make main Remove
Competitor Dify
dify.ai
AI apps without code
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
6.3Kvisits/mo
302.3Kvisits/mo
22Mvisits/mo
1Mvisits/mo
MoM change
▼ 57.9%
▲ 9.9%
▲ 14.6%
▼ 16.6%
6-month growth
-93.7%
-16.5%
+39.6%
-30.6%
Global rank web
#1,700,092
#157,147
#2,023
#39,510
Avg. last 3 months
13.9K
295.7K
19.5M
1.1M
Bounce rate lower is better
39%
46%
32%
41%
Pages / visit
1.8
2.9
7.7
4.4
Visit duration
14s
38s
6m 13s
6m 40s
Traffic sources
—
● Direct 69% · ● Referral 30%
● Direct 89% · ● Referral 10%
● Direct 84% · ● Referral 15%
Stack AICometAPIOpenRouterDify
05.5M11M16.5M22MStack 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 · 6.3KCometAPI · 834.4KCometAPI · 619.7KCometAPI · 437.2KCometAPI · 362.2KCometAPI · 355.5KCometAPI · 362.7KCometAPI · 309.5KCometAPI · 275.2KCometAPI · 302.3KOpenRouter · 7.5MOpenRouter · 8.6MOpenRouter · 8.4MOpenRouter · 11.2MOpenRouter · 15.8MOpenRouter · 17.9MOpenRouter · 16.8MOpenRouter · 17.3MOpenRouter · 19.2MOpenRouter · 22MDify · 1.1MDify · 1.2MDify · 1.3MDify · 1.1MDify · 1.5MDify · 1.2MDify · 1.1MDify · 1.2MDify · 1.2MDify · 1M1K10K100K1M10M100MStack 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 · 6.3KCometAPI · 834.4KCometAPI · 619.7KCometAPI · 437.2KCometAPI · 362.2KCometAPI · 355.5KCometAPI · 362.7KCometAPI · 309.5KCometAPI · 275.2KCometAPI · 302.3KOpenRouter · 7.5MOpenRouter · 8.6MOpenRouter · 8.4MOpenRouter · 11.2MOpenRouter · 15.8MOpenRouter · 17.9MOpenRouter · 16.8MOpenRouter · 17.3MOpenRouter · 19.2MOpenRouter · 22MDify · 1.1MDify · 1.2MDify · 1.3MDify · 1.1MDify · 1.5MDify · 1.2MDify · 1.1MDify · 1.2MDify · 1.2MDify · 1MNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Freemium
Freemium
Freemium
Starting price
Free tier
$4per month · free tier available
Free tier
$590per month · free tier available
Free tier
Free trial
–
–
API access
Plans
—
Free Trial FreePay-as-you-go Custom/usage-basedEnterprise Custom/mo
Free FreeStandard Custom/moBusiness Custom/moEnterprise Custom
Sandbox FreeProfessional $590/yrTeam $1,590/yrEnterprise Custom
Capabilities input → output
Input
TextDocumentsData
TextImages
AudioVideoTextImages
TextDocuments
Output
Apps
VideoTextImages
VideoTextImagesAudio
Apps
Skill level
Intermediate
Advanced
Advanced
Intermediate
Categories
Development & CodeProductivity & OfficeAI AgentAI Workflow+1 more
Development & CodeAI API
Development & CodeAI APILarge Language Models (LLMs)
Chatbots & CompanionsDevelopment & CodeProductivity & OfficeAI Agent+4 more
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
7
6
5
9
APIs
–
–
Agents
–
–
LLM gateway
–
–
No-code
–
–
Workflows
–
–
Agent creation
–
–
Developer tools
–
–
Development
–
–
API integrations
–
–
–
Business automation
–
–
–
Chatbots
–
–
–
LLM development
–
–
–
Large language models
–
–
–
Process automation
–
–
–
Finance workflow automation
–
–
–
Image generation
–
–
–
LLM comparison
–
–
–
Productivity
–
–
–
Video generation
–
–
–
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.