Dify vs Defapi vs Stack AI vs FastGPT

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

Your tool
Dify
vs
Competitor 1
DDefapi
Competitor 2
Stack AI
Competitor 3
FastGPT
Compare
4 tools · best value per row highlighted
Your tool Dify
dify.ai
AI apps without code
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Competitor DDefapi
defapi.org
You know how managing multiple AI provider integrations usually means maintaining separate codebases for each vendor
Make main Remove
Competitor Stack AI
stack-ai.com
Connect AI models visually
Make main Remove
Competitor FastGPT
fastgpt.io
FastGPT is an open-source platform for building AI agents and knowledge-base applications.
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
1Mvisits/mo
2.4Kvisits/mo
6.3Kvisits/mo
—
MoM change
▼ 16.6%
▼ 42.6%
▼ 57.9%
—
6-month growth
-30.6%
-86.2%
-93.7%
—
Global rank web
#39,510
#4,650,820
#1,700,092
—
Avg. last 3 months
1.1M
4.8K
13.9K
—
Bounce rate lower is better
41%
36%
39%
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Pages / visit
4.4
1.4
1.8
—
Visit duration
6m 40s
7s
14s
—
Traffic sources
● Direct 84% · ● Referral 15%
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—
—
DifyDefapiStack AIFastGPT
0368.2K736.4K1.1M1.5MDify · 1.1MDify · 1.2MDify · 1.3MDify · 1.1MDify · 1.5MDify · 1.2MDify · 1.1MDify · 1.2MDify · 1.2MDify · 1MDefapi · 11.1KDefapi · 13KDefapi · 12.4KDefapi · 17.7KDefapi · 9.4KDefapi · 6.2KDefapi · 7.6KDefapi · 4.2KDefapi · 2.4KStack 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 · 6.3K1K10K100K1M10MDify · 1.1MDify · 1.2MDify · 1.3MDify · 1.1MDify · 1.5MDify · 1.2MDify · 1.1MDify · 1.2MDify · 1.2MDify · 1MDefapi · 11.1KDefapi · 13KDefapi · 12.4KDefapi · 17.7KDefapi · 9.4KDefapi · 6.2KDefapi · 7.6KDefapi · 4.2KDefapi · 2.4KStack 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 · 6.3KNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Paid
Freemium
Freemium
Starting price
$590per month · free tier available
—
Free tier
CNY 99per month · free tier available
Free tier
–
Free trial
–
–
–
API access
Plans
Sandbox FreeProfessional $590/yrTeam $1,590/yrEnterprise Custom
Gemini 3.1 Pro Preview $1/$6/per requestClaude Sonnet 4.6 $1.5/$7.5/per requestClaude Opus 4.6 $2.5/$12.5/per requestSora 2 Stable $0.175+/per request+2 more
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Free Edition FreeBasic Edition $99/moAdvanced Edition $599/moCustom Edition Custom
Capabilities input → output
Input
TextDocuments
ImagesTextAudio
DataTextDocuments
Web pagesTextDocuments
Output
Apps
TextImagesAudio
Apps
Apps
Skill level
Intermediate
Advanced
Intermediate
Advanced
Categories
Chatbots & CompanionsDevelopment & CodeProductivity & OfficeAI Agent+4 more
Development & CodeAI API
Development & CodeProductivity & OfficeAI AgentAI Workflow+1 more
Chatbots & CompanionsEducation & LearningProductivity & OfficeAI Agent+2 more
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
9
4
7
9
Agents
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Agent creation
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Workflows
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No-code
–
–
Chatbots
–
–
API integrations
–
–
–
APIs
–
–
–
Knowledge bases
–
–
–
RAG
–
–
–
API management
–
–
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Business automation
–
–
–
Chatbot building
–
–
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Developer tools
–
–
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LLM development
–
–
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Process automation
–
–
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Self hosted
–
–
–
API security
–
–
–
Customer support chatbot
–
–
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Development
–
–
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Finance workflow automation
–
–
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Productivity
–
–
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 1
▲ 0
▲ 0
▲ 0
Saves
0
0
0
0
Reviews
0
0
0
0
Prompts
0
0
0
0
Verified listing
–
–
–
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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.