Weaviate vs Stack AI vs pgvector vs GigaSpaces eRAG GenAI

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

Your tool
Weaviate
vs
Competitor 1
Stack AI
Competitor 2
pgvector
Competitor 3
GigaSpaces eRAG GenAI
Compare
4 tools · best value per row highlighted
Your tool Weaviate
weaviate.io
Search that understands meaning
Remove
Competitor Stack AI
stack-ai.com
Connect AI models visually
Make main Remove
Competitor pgvector
github.com
pgvector is an open-source extension that adds vector similarity search to Postgres.
Make main Remove
Competitor GigaSpaces eRAG GenAI
gigaspaces.com
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
154.2Kvisits/mo
6.3Kvisits/mo
—
33.1Kvisits/mo
MoM change
▼ 11.8%
▼ 57.9%
—
▲ 1.9%
6-month growth
-7.0%
-93.7%
—
+18.8%
Global rank web
#293,589
#1,700,092
—
#993,506
Avg. last 3 months
155.7K
13.9K
—
27.4K
Bounce rate lower is better
41%
39%
—
39%
Pages / visit
1.9
1.8
—
1.6
Visit duration
50s
14s
—
20s
Traffic sources
● Direct 82% · ● Referral 18%
—
—
—
WeaviateStack AIpgvectorGigaSpaces eRAG GenAI
056.5K113K169.5K226KWeaviate · 226KWeaviate · 193.3KWeaviate · 188.9KWeaviate · 165.9KWeaviate · 184.5KWeaviate · 169.2KWeaviate · 137.9KWeaviate · 174.8KWeaviate · 154.2KStack 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 · 6.3KGigaSpaces eRAG GenAI · 25.3KGigaSpaces eRAG GenAI · 29.6KGigaSpaces eRAG GenAI · 33.3KGigaSpaces eRAG GenAI · 27.8KGigaSpaces eRAG GenAI · 32.1KGigaSpaces eRAG GenAI · 25.4KGigaSpaces eRAG GenAI · 16.8KGigaSpaces eRAG GenAI · 32.4KGigaSpaces eRAG GenAI · 33.1K1K10K100K1MWeaviate · 226KWeaviate · 193.3KWeaviate · 188.9KWeaviate · 165.9KWeaviate · 184.5KWeaviate · 169.2KWeaviate · 137.9KWeaviate · 174.8KWeaviate · 154.2KStack 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 · 6.3KGigaSpaces eRAG GenAI · 25.3KGigaSpaces eRAG GenAI · 29.6KGigaSpaces eRAG GenAI · 33.3KGigaSpaces eRAG GenAI · 27.8KGigaSpaces eRAG GenAI · 32.1KGigaSpaces eRAG GenAI · 25.4KGigaSpaces eRAG GenAI · 16.8KGigaSpaces eRAG GenAI · 32.4KGigaSpaces eRAG GenAI · 33.1KNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Freemium
Free
Free
Starting price
$45per month · free tier available
Free tier
Free
Free
Free tier
Free trial
–
–
–
API access
–
–
Plans
Free FreeFlex $45/moPremium $0
—
—
—
Capabilities input → output
Input
DataImagesText
DataDocumentsText
Data
Data
Output
Data
Apps
Data
Data
Skill level
Advanced
Intermediate
Advanced
Advanced
Categories
Development & CodeAI Developer Tools
Development & CodeProductivity & OfficeAI AgentAI Workflow+1 more
Development & CodeAI Developer Tools
Development & CodeAI Developer Tools
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
6
7
7
3
Vector databases
–
–
Developer tools
–
–
RAG
–
–
Agents
–
–
–
No-code
–
–
–
Vector indexes
–
–
–
Workflows
–
–
–
Agent creation
–
–
–
Business automation
–
–
–
Database q a
–
–
–
Databases
–
–
–
PostgreSQL assistance
–
–
–
Process automation
–
–
–
APIs
–
–
–
Chatbots
–
–
–
Finance workflow automation
–
–
–
Information retrieval
–
–
–
LLM development
–
–
–
SQL
–
–
–
Self hosted
–
–
–
Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 0
▲ 0
▲ 0
Saves
0
0
0
0
Reviews
0
0
0
0
Prompts
0
0
0
0
Verified listing
–
–
–
–

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.