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Vector Database
Methodology

pgvector vs Chroma

PGpgvectorvsChromaCHChroma
pgvectorChroma
33%
67%

Leading: Chroma (66.7%)

Insufficient data
This matchup has 3 decisive cases (minimum 30 required for publication).

Statistics

MetricValue
pgvector wins1
Chroma wins2
Abstains (no tool)0
Other tool chosen56
Decisive cases3
pgvector win rate (unweighted)33.3%
95% CI6.1% - 79.2%
pgvector win rate (weighted)33.3%

Comments

pgvector

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Chroma

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Per-model breakdown

ModelTierpgvectorChromaNoneOtherA rate
Mistral Small 4Mid02000%
Claude Opus 4.8Frontier1002100%
Claude Haiku 4.5Small0003n/a
Claude Sonnet 4.6Frontier0003n/a
DeepSeek R1 0528Frontier0003n/a
DeepSeek V4 FlashMid0003n/a
DeepSeek V4 ProFrontier0003n/a
Devstral 2 2512Mid0003n/a
Gemini 2.5 ProFrontier0003n/a
Gemini 3.5 FlashSmall0003n/a
GLM 5.2Frontier0003n/a
GPT 5.3 CodexFrontier0003n/a
GPT 5.4 MiniMid0003n/a
GPT 5.5Frontier0003n/a
Kimi K2.7 CodeFrontier0003n/a
Llama 4 MaverickFrontier0003n/a
Llama 4 ScoutSmall0003n/a
MiMo V2.5 ProFrontier0003n/a
MiniMax M3Frontier0003n/a
Qwen3 Coder NextMid0003n/a

Per-prompt breakdown

PromptTierpgvectorChromaNoneOtherA rate
ai-agent-applicationAdvanced10018100%
ai-agent-applicationIntermediate010190%
ai-agent-applicationBeginner010190%