Haystack vs Defapi vs CometAPI vs LangChain

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

Your tool
Haystack
vs
Competitor 1
DDefapi
Competitor 2
CometAPI
Competitor 3
LangChain
Compare
4 tools · best value per row highlighted
Your tool 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 DDefapi
defapi.org
You know how managing multiple AI provider integrations usually means maintaining separate codebases for each vendor
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Competitor CometAPI
cometapi.com
CometAPI functions as an aggregation layer that sits between your application and hundreds of AI model providers
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Competitor LangChain
langchain.com
Framework for building with large language models
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Traffic estimated monthly website traffic
Monthly visits
—
2.4Kvisits/mo
302.3Kvisits/mo
3.4Mvisits/mo
MoM change
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▼ 42.6%
▲ 9.9%
▲ 0.7%
6-month growth
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-86.2%
-16.5%
+21.0%
Global rank web
—
#4,650,820
#157,147
#13,384
Avg. last 3 months
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4.8K
295.7K
3.3M
Bounce rate lower is better
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36%
46%
42%
Pages / visit
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1.4
2.9
6.2
Visit duration
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7s
38s
5m 29s
Traffic sources
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—
● Direct 69% · ● Referral 30%
● Direct 73% · ● Referral 24%
HaystackDefapiCometAPILangChain
0850.7K1.7M2.6M3.4MDefapi · 11.1KDefapi · 13KDefapi · 12.4KDefapi · 17.7KDefapi · 9.4KDefapi · 6.2KDefapi · 7.6KDefapi · 4.2KDefapi · 2.4KCometAPI · 834.4KCometAPI · 619.7KCometAPI · 437.2KCometAPI · 362.2KCometAPI · 355.5KCometAPI · 362.7KCometAPI · 309.5KCometAPI · 275.2KCometAPI · 302.3KLangChain · 3MLangChain · 2.9MLangChain · 3.2MLangChain · 2.8MLangChain · 3.4MLangChain · 3.2MLangChain · 3.1MLangChain · 3.4MLangChain · 3.4M1K10K100K1M10MDefapi · 11.1KDefapi · 13KDefapi · 12.4KDefapi · 17.7KDefapi · 9.4KDefapi · 6.2KDefapi · 7.6KDefapi · 4.2KDefapi · 2.4KCometAPI · 834.4KCometAPI · 619.7KCometAPI · 437.2KCometAPI · 362.2KCometAPI · 355.5KCometAPI · 362.7KCometAPI · 309.5KCometAPI · 275.2KCometAPI · 302.3KLangChain · 3MLangChain · 2.9MLangChain · 3.2MLangChain · 2.8MLangChain · 3.4MLangChain · 3.2MLangChain · 3.1MLangChain · 3.4MLangChain · 3.4MNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
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Paid
Freemium
Freemium
Starting price
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—
$4per month · free tier available
$39per month · free tier available
Free tier
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Free trial
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API access
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Plans
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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
Free Trial FreePay-as-you-go Custom/usage-basedEnterprise Custom/mo
Developer FreePlus $39/moEnterprise Custom/mo
Capabilities input → output
Input
DocumentsCode
TextImagesAudio
TextImages
CodeText
Output
Apps
TextImagesAudio
VideoTextImages
Apps
Skill level
Advanced
Advanced
Advanced
Advanced
Categories
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Development & CodeAI API
Development & CodeAI API
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
7
4
6
6
Developer tools
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APIs
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Agent creation
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Agents
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LLM development
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API integrations
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LLM gateway
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RAG
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–
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API management
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–
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Development
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API security
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Agent memory
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Agent testing
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Image generation
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Self hosted
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Video generation
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
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▲ 0
▲ 1
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.