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Vector Database
Methodology

pgvector vs Chroma

PGpgvectorvsChromaCHChroma
pgvectorChroma
50%
50%
Insufficient data
This matchup has 18 decisive cases (minimum 30 required for publication).

Statistics

MetricValue
pgvector wins9
Chroma wins9
Abstains (no tool)1
Other tool chosen385
Decisive cases18
pgvector win rate (unweighted)50.0%
95% CI29.0% - 71.0%
pgvector win rate (weighted)50.0%

Comments

pgvector

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Chroma

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Per-model breakdown

ModelTierpgvectorChromaNoneOtherA rate
Mistral Small 4Mid270322%
Claude Opus 4.8Frontier70014100%
DeepSeek V4 FlashMid010200%
DeepSeek V4 ProFrontier010200%
Claude Haiku 4.5Small00021n/a
Claude Sonnet 4.6Frontier00021n/a
DeepSeek R1 0528Frontier00120n/a
Devstral 2 2512Mid00015n/a
Gemini 2.5 ProFrontier00021n/a
Gemini 3.5 FlashSmall00021n/a
GLM 5.2Frontier00020n/a
GPT 5.3 CodexFrontier00021n/a
GPT 5.4 MiniMid00021n/a
GPT 5.5Frontier00021n/a
Kimi K2.7 CodeFrontier00021n/a
Llama 4 MaverickFrontier00021n/a
Llama 4 ScoutSmall00021n/a
MiMo V2.5 ProFrontier00021n/a
MiniMax M3Frontier00021n/a
Qwen3 Coder NextMid00021n/a

Per-prompt breakdown

PromptTierpgvectorChromaNoneOtherA rate
ai-agent-applicationAdvanced72012478%
ai-agent-applicationBeginner15013217%
ai-agent-applicationIntermediate12112933%