UltraBERT Embed 150M

Name: UltraBERT Embed 150M
Brand: dmis-lab

Oct 2026

dUltraBERT Embed 150M

Compare in

self-host onlyprice

57.2MTEB English v2

Oct 2026released

768Dimensions

33K tokensMax input

enLanguages

Rankingconfiguration unstated?

Full ranking →

1LCO Embedding Omni 7B39.7 2LGAI Embedding Preview38.9 3Gemini Embedding 00138.3 4ICT TIME And Querit Embedding v138 5Giga Embeddings Instruct37.7

···

29Mmlw Roberta Large35 30UltraBERT Embed 150M34.9 31Qwen 3 Embedding 8B34.8

Strong at

Embeddings & Retrieval#43 of 200

Alternatives?

ModelScoreCostPriceWhat changes

BetterEmbeddingGemma 300MunstatedOpen+8%—$0.002Max input: 33K tokens → 2K tokens+2 aOpenLGAI Embedding Previewunstated+12%——Memory (4-bit): 0.1 GB → 4.3 GB

BetterGemini Embedding 001unstated+10%—$0.15Max input: 33K tokens → 2K tokens+1 IBetterICT TIME And Querit Embedding v1unstatedOpen+9%——Languages: not verified+1 aBetterGiga Embeddings InstructunstatedOpen+8%——Max input: 33K tokens → 4K tokens+1

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

LongEmbed · Mean over tasks · English79.3#3

LongEmbed · Mean over task types · English79.3#3

LongEmbed · Retrieval · English79.3#3

MTEB Medical v1 · Clustering · English38.5#57

CoIR · Mean over tasks · multilingual (9 languages)72.7#25

CoIR · Mean over task types · multilingual (9 languages)72.7#25

CoIR · Retrieval · multilingual (9 languages)72.7#25

MTEB Code v1 · Mean over tasks · multilingual (15 languages)73.3#24

MTEB Code v1 · Mean over task types · multilingual (15 languages)73.3#24

MTEB Code v1 · Retrieval · multilingual (15 languages)73.3#24

FAQ

How much does UltraBERT Embed 150M cost?›

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

Is UltraBERT Embed 150M free to use?›

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

How good is UltraBERT Embed 150M, and what is it best at?›

#43 of 200 in Embeddings. Strongest at: Embeddings & Retrieval.

Is UltraBERT Embed 150M better than Mmlw Roberta Large?›

On MTEB English v2 · Summarization · English, UltraBERT Embed 150M scores 34.9 vs 35 — about the same.

When was UltraBERT Embed 150M released? Is there a newer version?›

Released 2026-10-10. It is the current version in its line.

Is UltraBERT Embed 150M open source?›

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

Can I run UltraBERT Embed 150M locally?›

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

What is UltraBERT Embed 150M?›

UltraBERT Embed 150M is an open-weights embeddings & retrieval model from dmis-lab, released Oct 2026.

What are the best alternatives to UltraBERT Embed 150M?›

EmbeddingGemma 300M (better), LGAI Embedding Preview (open weights).