Vector Database

Chroma vs pgvector

Chromapgvector

43%

57%

Leading: pgvector (56.5%)

Insufficient data

This matchup has 23 decisive cases (minimum 30 required for publication).

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Model range	Tier	Chroma	pgvector	None	Other	A rate
DeepSeek Flash 3.2–4.1	Mid	1	0	0	26	100%
DeepSeek Pro 4–4 0813	Frontier	1	0	0	26	100%
DeepSeek R1	Frontier	0	0	1	26	n/a
Devstral	Mid	0	0	0	21	n/a
Gemini Flash 2.5–3.8	Small	0	0	0	27	n/a
Gemini Pro 2.5–3.1 Preview	Frontier	0	0	0	27	n/a
GLM 5 Turbo–5.3	Frontier	0	1	0	25	0%
GPT 5.4–6 Astra	Frontier	0	0	0	27	n/a
GPT Coding 5.3 Codex–6.1 Sol	Frontier	0	0	0	27	n/a
GPT Mini 5.4 Mini–6 Luna	Mid	0	0	0	27	n/a
Haiku	Small	0	0	0	27	n/a
Kimi 2.5–3	Frontier	0	0	0	27	n/a
Llama Maverick	Frontier	0	0	0	27	n/a
Llama Scout	Small	0	0	0	27	n/a
MiMo Pro 2–2.6	Frontier	0	0	0	27	n/a
MiniMax M 2.7–3	Frontier	0	0	0	27	n/a
Mistral Small	Mid	8	3	0	4	73%
Opus 4.6–5.5	Frontier	0	9	0	18	0%
Qwen Coder	Mid	0	0	0	27	n/a
Sonnet 4.6–5.5	Frontier	0	0	0	27	n/a

Prompt	Tier	Chroma	pgvector	None	Other	A rate
ai-agent-application	Advanced	2	9	0	162	18%
ai-agent-application	Beginner	6	2	0	169	75%
ai-agent-application	Intermediate	2	2	1	166	50%