Ja Embed Sts

Name: Ja Embed Sts
Brand: NGA-KR

Sep 2026

NJa Embed Sts

Compare in

self-host onlyprice

85.6JMTEB v2

Sep 2026released

1,024Dimensions

1K tokensMax input

en, koLanguages

Ranking?

Full ranking →

1Comsat Embed Ja 8B Preview80.1 2Ruri v3 310M78.8 3Sarashina Embedding v2 1B78.3 4Ruri v3 130M78.1 5Comsat Embed Ja 0.3B Preview77.7

···

8F2LLM v2 8B76.6 9Ja Embed Sts76.3 10Harrier OSS v1 0.6B76.3

Alternatives?

ModelScoreCostPriceWhat changes

sBetterComsat Embed Ja 8B PreviewOpen+5%——Memory (4-bit): 0.2 GB → 4.5 GB cBetterRuri v3 310MOpen+3%——Languages: loses en, ko sBetterSarashina Embedding v2 1BOpen+3%——Languages: loses en, ko+1 cOpenRuri v3 130M+2%——Languages: loses en, ko sOpenComsat Embed Ja 0.3B Preview+2%——Languages: loses en, ko

Run it yourself

estimate

Fits on✓ 8 GB (phone, laptop) · full quality✓ 16 GB · full quality✓ 24 GB GPU · full quality✓ 48 GB GPU · full quality✓ 80 GB GPU · full quality

LicenceApache-2.0free for commercial use

Benchmarks

in Embeddings & Retrieval

JMTEB v2 · Mean over tasks · Japanese68.3#16

JMTEB v2 · Mean over task types · Japanese68.7#16

JMTEB v2 · Clustering · Japanese48.5#41

JMTEB v2 · Classification · Japanese61.8#22

JMTEB v2 · Retrieval · Japanese71.1#14

JMTEB v2 · STS · Japanese85.6#1

JMTEB v2 · Reranking · Japanese76.3#9

FAQ

How much does Ja Embed Sts cost?›

There is no per-unit API price: self-host only.

Is Ja Embed Sts free to use?›

There is no free API. The weights are open, so you can run it yourself.

How good is Ja Embed Sts, and what is it best at?›

#1 of 164 in Embeddings.

Is Ja Embed Sts better than F2LLM v2 8B?›

On JMTEB v2 · Reranking · Japanese, Ja Embed Sts scores 76.3 vs 76.6 — about the same.

When was Ja Embed Sts released? Is there a newer version?›

Released 2026-09-15. It is the current version in its line.

Is Ja Embed Sts open source?›

Yes, the weights are open (Apache-2.0 licence).

Can I run Ja Embed Sts locally?›

The weights are open and can be self-hosted; hardware needs are not confirmed yet.

What is Ja Embed Sts?›

Ja Embed Sts is an open-weights embeddings & retrieval model from NGA-KR, released Sep 2026.

What are the best alternatives to Ja Embed Sts?›

Comsat Embed Ja 8B Preview (better).