LangChain vs Haystack vs Flowise vs OpenAI Agents SDK

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

Your tool
LangChain
vs
Competitor 1
Haystack
Competitor 2
Flowise
Competitor 3
OAOpenAI Agents SDK
Compare
4 tools · best value per row highlighted
Your tool LangChain
langchain.com
Framework for building with large language models
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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.
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Competitor Flowise
flowiseai.com
No-code AI workflows
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Competitor OAOpenAI Agents SDK
openai.github.io
The OpenAI Agents SDK is a Python package for building agentic applications with very few abstractions.
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
3.4Mvisits/mo
—
168.3Kvisits/mo
—
MoM change
▲ 0.7%
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▼ 27.6%
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6-month growth
+21.0%
—
-14.1%
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Global rank web
#13,384
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#239,649
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Avg. last 3 months
3.3M
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203.8K
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Bounce rate lower is better
42%
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43%
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Pages / visit
6.2
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2.8
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Visit duration
5m 29s
—
1m 23s
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Traffic sources
● Direct 73% · ● Referral 24%
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● Direct 79% · ● Referral 19%
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LangChainHaystackFlowiseOpenAI Agents SDK
0850.7K1.7M2.6M3.4MLangChain · 3MLangChain · 2.9MLangChain · 3.2MLangChain · 2.8MLangChain · 3.4MLangChain · 3.2MLangChain · 3.1MLangChain · 3.4MLangChain · 3.4MFlowise · 254.4KFlowise · 249KFlowise · 240.1KFlowise · 195.9KFlowise · 226.4KFlowise · 223.8KFlowise · 210.5KFlowise · 232.5KFlowise · 168.3K100K1M10MLangChain · 3MLangChain · 2.9MLangChain · 3.2MLangChain · 2.8MLangChain · 3.4MLangChain · 3.2MLangChain · 3.1MLangChain · 3.4MLangChain · 3.4MFlowise · 254.4KFlowise · 249KFlowise · 240.1KFlowise · 195.9KFlowise · 226.4KFlowise · 223.8KFlowise · 210.5KFlowise · 232.5KFlowise · 168.3KNov '25DecJan '26FebMarAprMayJunJul
Pricing
Model
Freemium
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Freemium
Free
Starting price
$39per month · free tier available
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$35per month · free tier available
Free
Free tier
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Free trial
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–
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API access
–
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Plans
Developer FreePlus $39/moEnterprise Custom/mo
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Free FreeStarter $35/moPro $65/mo
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Capabilities input → output
Input
CodeText
CodeDocuments
DocumentsText
AudioCodeText
Output
Apps
Apps
Apps
AppsAudio
Skill level
Advanced
Advanced
Advanced
Advanced
Categories
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Chatbots & CompanionsDevelopment & CodeProductivity & OfficeAI Agent+3 more
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
6
2
3
2
Agents
Agent creation
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LLM development
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No-code
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Workflows
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Developer tools
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Development
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Agent testing
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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.