pgvector vs LangChain vs Qdrant vs Haystack

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

Your tool
pgvector
vs
Competitor 1
LangChain
Competitor 2
Qdrant
Competitor 3
Haystack
Compare
4 tools · best value per row highlighted
Your tool pgvector
github.com
pgvector is an open-source extension that adds vector similarity search to Postgres.
Remove
Competitor LangChain
langchain.com
Framework for building with large language models
Make main Remove
Competitor Qdrant
qdrant.tech
Vectors at scale
Make main Remove
Competitor Haystack
haystack.deepset.ai
Haystack is an open-source AI orchestration framework from deepset for building production-grade LLM applications and agents.
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
—
3.4Mvisits/mo
310.5Kvisits/mo
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MoM change
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▲ 0.7%
▲ 0.3%
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6-month growth
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+21.0%
-6.1%
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Global rank web
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#13,384
#175,101
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Avg. last 3 months
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3.3M
306.8K
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Bounce rate lower is better
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42%
50%
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Pages / visit
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6.2
1.8
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Visit duration
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5m 29s
1m 13s
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Traffic sources
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● Direct 73% · ● Referral 24%
● Direct 75% · ● Referral 24%
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pgvectorLangChainQdrantHaystack
0850.7K1.7M2.6M3.4MLangChain · 3MLangChain · 2.9MLangChain · 3.2MLangChain · 2.8MLangChain · 3.4MLangChain · 3.2MLangChain · 3.1MLangChain · 3.4MLangChain · 3.4MQdrant · 315.9KQdrant · 319.2KQdrant · 363.4KQdrant · 330.7KQdrant · 354.7KQdrant · 315.9KQdrant · 300.2KQdrant · 309.7KQdrant · 310.5K100K1M10MLangChain · 3MLangChain · 2.9MLangChain · 3.2MLangChain · 2.8MLangChain · 3.4MLangChain · 3.2MLangChain · 3.1MLangChain · 3.4MLangChain · 3.4MQdrant · 315.9KQdrant · 319.2KQdrant · 363.4KQdrant · 330.7KQdrant · 354.7KQdrant · 315.9KQdrant · 300.2KQdrant · 309.7KQdrant · 310.5KNov '25DecJan '26FebMarAprMayJunJul
Pricing
Model
Free
Freemium
Freemium
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Starting price
Free
$39per month · free tier available
Free tier
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Free tier
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Free trial
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API access
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Plans
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Developer FreePlus $39/moEnterprise Custom/mo
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Capabilities input → output
Input
Data
CodeText
Data
CodeDocuments
Output
Data
Apps
Data
Apps
Skill level
Advanced
Advanced
Advanced
Advanced
Categories
Development & CodeAI Developer Tools
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Development & CodeAI Developer Tools
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
7
6
7
7
Developer tools
Agent creation
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Agents
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LLM development
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Vector databases
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Vector indexes
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RAG
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Development
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Self hosted
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Database search
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Databases
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PostgreSQL assistance
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Agent memory
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Agent testing
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Database management
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SQL
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 1
▲ 0
▲ 0
Saves
0
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0
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Reviews
0
0
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Prompts
0
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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.