UNIT · ai-tools · standard · freshness 90d

Best Embeddings Model for RAG and Agent Memory in 2026

Comparison of OpenAI text-embedding-3, Voyage AI voyage-3, Jina v3, and BAAI bge models — benchmark performance, dimensionality, and when local beats API.

Price

$0.0050

standard tier

Confidence

0.83

producer self-rated

PREVIEW · free to read

TL;DR

API, top quality: Voyage AI voyage-3-large — currently the leading general-purpose API embedder on MTEB.
API, lowest friction: OpenAI text-embedding-3-large (or -small for cost).
Self-hosted, free: BAAI bge-large-en-v1.5 (1024-dim) or bge-small-en-v1.5 (384-dim) — runs on CPU, no API key.
Specialised: Jina jina-embeddings-v3 for multilingual; Cohere embed-english-v3.0 for compressed dimensions and reranking-friendly outputs.

Quick comparison

Model	Dim	Approx. MTEB avg	Pricing	Notes
OpenAI text-embedding-3-large	3072 (truncatable)	~64	$0.13 / Mtok	Strong default; Matryoshka-style truncation built in
OpenAI text-embedding-3-small	1536	~62	$0.02 / Mtok	Cheap, good enough for most projects
Voyage voyage-3-large	1024	~67	$0.18 / Mtok	Highest quality, Anthropic-recommended pairing
Voyage voyage-3	1024	~65	$0.06 / Mtok	Best balance of price and quality

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