Weaviate vs LangChain vs Pinecone vs pgvector

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

Your tool
Weaviate
vs
Competitor 1
LangChain
Competitor 2
Pinecone
Competitor 3
pgvector
Compare
4 tools · best value per row highlighted
Your tool Weaviate
weaviate.io
Search that understands meaning
Remove
Competitor LangChain
langchain.com
Framework for building with large language models
Make main Remove
Competitor Pinecone
pinecone.io
Vector database for AI applications
Make main Remove
Competitor pgvector
github.com
pgvector is an open-source extension that adds vector similarity search to Postgres.
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
154.2Kvisits/mo
3.4Mvisits/mo
434.9Kvisits/mo
—
MoM change
▼ 11.8%
▲ 0.7%
▼ 13.7%
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6-month growth
-7.0%
+21.0%
-32.9%
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Global rank web
#293,589
#13,384
#85,031
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Avg. last 3 months
155.7K
3.3M
506.2K
—
Bounce rate lower is better
41%
42%
41%
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Pages / visit
1.9
6.2
4.2
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Visit duration
50s
5m 29s
2m 31s
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Traffic sources
● Direct 82% · ● Referral 18%
● Direct 73% · ● Referral 24%
● Direct 77% · ● Referral 20%
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WeaviateLangChainPineconepgvector
0850.7K1.7M2.6M3.4MWeaviate · 226KWeaviate · 193.3KWeaviate · 188.9KWeaviate · 165.9KWeaviate · 184.5KWeaviate · 169.2KWeaviate · 137.9KWeaviate · 174.8KWeaviate · 154.2KLangChain · 3MLangChain · 2.9MLangChain · 3.2MLangChain · 2.8MLangChain · 3.4MLangChain · 3.2MLangChain · 3.1MLangChain · 3.4MLangChain · 3.4MPinecone · 602KPinecone · 565.4KPinecone · 627.7KPinecone · 536.6KPinecone · 648KPinecone · 602.3KPinecone · 648KPinecone · 579.9KPinecone · 503.7KPinecone · 434.9K100K1M10MWeaviate · 226KWeaviate · 193.3KWeaviate · 188.9KWeaviate · 165.9KWeaviate · 184.5KWeaviate · 169.2KWeaviate · 137.9KWeaviate · 174.8KWeaviate · 154.2KLangChain · 3MLangChain · 2.9MLangChain · 3.2MLangChain · 2.8MLangChain · 3.4MLangChain · 3.2MLangChain · 3.1MLangChain · 3.4MLangChain · 3.4MPinecone · 602KPinecone · 565.4KPinecone · 627.7KPinecone · 536.6KPinecone · 648KPinecone · 602.3KPinecone · 648KPinecone · 579.9KPinecone · 503.7KPinecone · 434.9KNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Freemium
Freemium
Free
Starting price
$45per month · free tier available
$39per month · free tier available
$20per month · free tier available
Free
Free tier
Free trial
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API access
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Plans
Free FreeFlex $45/moPremium $0
Developer FreePlus $39/moEnterprise Custom/mo
Starter FreeBuilder $20/moStandard $50/moEnterprise $500/mo
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Capabilities input → output
Input
DataImagesText
CodeText
DataText
Data
Output
Data
Apps
Data
Data
Skill level
Advanced
Advanced
Advanced
Advanced
Categories
Development & CodeAI Developer Tools
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Development & CodeAI Developer Tools
Development & CodeAI Developer Tools
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
2
6
4
3
Vector databases
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Developer tools
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LLM development
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Development
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Agent creation
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Agents
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Databases
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Vector indexes
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PostgreSQL assistance
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APIs
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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
▲ 0
▲ 1
▲ 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.