OpenAI API vs Stack AI vs Activepieces vs DeepSeek

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

Your tool
OpenAI API
vs
Competitor 1
Stack AI
Competitor 2
Activepieces
Competitor 3
DeepSeek
Compare
4 tools · best value per row highlighted
Your tool OpenAI API
platform.openai.com
The API powering the AI ecosystem
Remove
Competitor Stack AI
stack-ai.com
Connect AI models visually
Make main Remove
Competitor Activepieces
activepieces.com
Make main Remove
Competitor DeepSeek
deepseek.com
DeepSeek is an AI lab and chat assistant.
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
15.2Mvisits/mo
6.3Kvisits/mo
221.7Kvisits/mo
353.8Mvisits/mo
MoM change
▲ 4.6%
▼ 57.9%
▲ 1.8%
▲ 2.1%
6-month growth
-2.4%
-93.7%
-10.0%
+0.9%
Global rank web
—
#1,700,092
#174,361
#131
Avg. last 3 months
15.2M
13.9K
226.6K
357.9M
Bounce rate lower is better
34%
39%
39%
38%
Pages / visit
5.4
1.8
3.8
3.4
Visit duration
3m 56s
14s
2m 39s
5m 33s
Traffic sources
● Direct 82% · ● Referral 15%
—
● Direct 74% · ● Referral 24%
● Direct 95% · ● Referral 4%
OpenAI APIStack AIActivepiecesDeepSeek
0107.6M215.2M322.8M430.4MOpenAI API · 18.7MOpenAI API · 16.7MOpenAI API · 16.5MOpenAI API · 15.6MOpenAI API · 15.9MOpenAI API · 15.1MOpenAI API · 15.7MOpenAI API · 14.6MOpenAI API · 15.2MStack 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 · 6.3KActivepieces · 209.7KActivepieces · 239.2KActivepieces · 236KActivepieces · 187.9KActivepieces · 246.2KActivepieces · 223.6KActivepieces · 218.4KActivepieces · 240.1KActivepieces · 217.9KActivepieces · 221.7KDeepSeek · 345.7MDeepSeek · 328.9MDeepSeek · 298.3MDeepSeek · 273.2MDeepSeek · 350.8MDeepSeek · 411.2MDeepSeek · 430.4MDeepSeek · 373.5MDeepSeek · 346.4MDeepSeek · 353.8M1K10K100K1M10M100M1BOpenAI API · 18.7MOpenAI API · 16.7MOpenAI API · 16.5MOpenAI API · 15.6MOpenAI API · 15.9MOpenAI API · 15.1MOpenAI API · 15.7MOpenAI API · 14.6MOpenAI API · 15.2MStack 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 · 6.3KActivepieces · 209.7KActivepieces · 239.2KActivepieces · 236KActivepieces · 187.9KActivepieces · 246.2KActivepieces · 223.6KActivepieces · 218.4KActivepieces · 240.1KActivepieces · 217.9KActivepieces · 221.7KDeepSeek · 345.7MDeepSeek · 328.9MDeepSeek · 298.3MDeepSeek · 273.2MDeepSeek · 350.8MDeepSeek · 411.2MDeepSeek · 430.4MDeepSeek · 373.5MDeepSeek · 346.4MDeepSeek · 353.8MNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Paid
Freemium
Freemium
Freemium
Starting price
—
Free tier
$20per month · free tier available
—
Free tier
–
–
Free trial
–
–
API access
–
–
Plans
—
—
Free FreePlus $20/moTeam $200/mo
deepseek-flash Customdeepseek-v4-pro Custom
Capabilities input → output
Input
DocumentsImagesTextAudio
TextDocumentsData
Text
TextImagesCode
Output
AudioCodeImagesTextVideo
Apps
Apps
TextCode
Skill level
Advanced
Intermediate
Intermediate
Beginner-friendly
Categories
Development & CodeAI APILarge Language Models (LLMs)
Development & CodeProductivity & OfficeAI AgentAI Workflow+1 more
Productivity & OfficeAI AgentAI Workflow
Chatbots & CompanionsDevelopment & CodeEducation & LearningWriting & Content+10 more
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
6
7
4
9
Agents
–
–
No-code
–
–
Workflows
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–
Large language models
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–
Agent creation
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–
APIs
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–
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Chatbots
–
–
–
Business automation
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–
–
Coding
–
–
–
Developer tools
–
–
–
Homework assistance
–
–
–
LLM development
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–
–
Process automation
–
–
–
Research
–
–
–
Summarizing
–
–
–
Translations
–
–
–
Writing
–
–
–
API integrations
–
–
–
Chatbot building
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–
–
Finance workflow automation
–
–
–
Math
–
–
–
Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 1
▲ 0
▲ 0
▲ 3
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.