Model reference · open weights

KaLM-embedding-multilingual-mini

Embeddings HIT-TMG Embeddings 1 build Open weights 6k dl/mo

KaLM-embedding-multilingual-mini is an open-weight embedding model from HIT-TMG. KaLM-embedding-multilingual-mini-v1 (FP32) weighs 988 MB; the smallest configuration that runs it is RTX 3060 12 GB.

For self-hosting, compare this build's requirements below with the GPU you plan to rent.

  • KaLM-embedding-multilingual-mini is a 494M parameter sentence-similarity model developed by HIT-TMG.
  • It is trained from Qwen2-0.5B and supports a context length of 131072 tokens.
  • The model is released under the MIT licence.

Summary of the HIT-TMG/KaLM-embedding-multilingual-mini-v1 model card, 2026-10-01

What it is

Released byHIT-TMG
Released2024-08-27
Parameters494M
VRAM988 MB for the weights

What it runs on

Memory and cards for KaLM-embedding-multilingual-mini-v1 (FP32)

988 MBweights, file size
1.1 GBruntime overhead
CardRunsMemory
RTX 3060 12 GBfits11.6 GB
RTX 4060 Ti 16 GBfits15.4 GB
RTX 3090 24 GBfits23.4 GB
RTX 4090 24 GBfits23.4 GB
RTX 5090 32 GBfits31.0 GB
L40S 48 GBfits44.0 GB
A100 80 GBfits78.2 GB
H100 80 GBfits78.1 GB
RTX PRO 6000 Blackwell 96 GBfits93.8 GB
DGX Spark (GB10) 128 GB unifiedfits107 GB
H200 141 GBfits138 GB
B200 180 GBfits176 GB

From the model card

What HIT-TMG says about KaLM-embedding-multilingual-mini

Read the model card

KaLM-Embedding is a series of embedding models adapted from auto-regressive LLMs with superior training data.

KaLM-embedding-multilingual-mini is trained from Qwen/Qwen2-0.5B with massive weakly-supervised pre-training and supervised fine-tuning data.

📑 Open-source Plan

Evaluation

Model NameModel SizeC-MTEB(35)MTEB(56)avg
multilingual-e5-large560M58.8161.560.16
bge-m3 (dense)560M60.8059.8460.32
gte-multilingual-base (dense)305M62.7261.4062.06
KaLM-embedding-multilingual-mini-v1494M62.3161.8762.09
KaLM-embedding-multilingual-mini-instruct-v1494M63.5764.7464.16
KaLM-embedding-multilingual-mini-instruct-v1.5494M64.1364.9464.53

Requirements

Since we have used the Qwen2 model, we advise you to install transformers>=4.37.0, or you might encounter the following error:

KeyError: 'qwen2'

Usage

Using this model becomes easy when you have sentence-transformers installed:

pip install -U sentence-transformers

Then you can use the model like this:

from sentence_transformers import SentenceTransformer

sentences = ["This is an example sentence", "Each sentence is converted"]

model = SentenceTransformer('{MODEL_NAME_OR_PATH}')   # Do NOT set trust_remote_code
model.max_seq_length = 512

embeddings = model.encode(
    sentences,
    normalize_embeddings=True,
    batch_size=256,
    show_progress_bar=True
    )
print(embeddings)

We add instruction for classification and clustering. If you want to add instruction to the query (no instruction for the corpus), you can use the model like this:

from sentence_transformers import SentenceTransformer

sentences = ["This is an example sentence", "Each sentence is converted"]

model = SentenceTransformer('{MODEL_NAME_OR_PATH}')   # Do NOT set trust_remote_code
model.max_seq_length = 512

prompt = "Instruct: Classifying the category of french news. \n Query: "
embeddings = model.encode(
    sentences,
    prompt=prompt,
    normalize_embeddings=True,
    batch_size=256,
    show_progress_bar=True
    )
print(embeddings)

Contact

If you encounter any issue, feel free to contact us via the email: yanshek.woo@gmail.com

Quoted from the model card on Hugging Face. The full card is behind the Hugging Face link above.

Benchmarks

Reported results

As published on the model card: the maker's own numbers, not measured by AxForge.

TaskDatasetMetricScore
ClassificationMTEB AmazonCounterfactualClassification (en-ext)accuracy74.160
ClassificationMTEB AmazonCounterfactualClassification (en-ext)ap22.731
ClassificationMTEB AmazonCounterfactualClassification (en-ext)ap_weighted22.731
ClassificationMTEB AmazonCounterfactualClassification (en-ext)f161.311
ClassificationMTEB AmazonCounterfactualClassification (en-ext)f1_weighted78.921
ClassificationMTEB AmazonCounterfactualClassification (en-ext)main_score74.160
ClassificationMTEB AmazonCounterfactualClassification (en)accuracy72.358
ClassificationMTEB AmazonCounterfactualClassification (en)ap34.130
ClassificationMTEB AmazonCounterfactualClassification (en)ap_weighted34.130
ClassificationMTEB AmazonCounterfactualClassification (en)f165.911
ClassificationMTEB AmazonCounterfactualClassification (en)f1_weighted74.909
ClassificationMTEB AmazonCounterfactualClassification (en)main_score72.358
ClassificationMTEB AmazonPolarityClassificationaccuracy95.269
ClassificationMTEB AmazonPolarityClassificationap93.693
ClassificationMTEB AmazonPolarityClassificationap_weighted93.693
ClassificationMTEB AmazonPolarityClassificationf195.267
ClassificationMTEB AmazonPolarityClassificationf1_weighted95.267
ClassificationMTEB AmazonPolarityClassificationmain_score95.269
ClassificationMTEB AmazonReviewsClassification (en)accuracy51.010
ClassificationMTEB AmazonReviewsClassification (en)f148.699
ClassificationMTEB AmazonReviewsClassification (en)f1_weighted48.699
ClassificationMTEB AmazonReviewsClassification (en)main_score51.010
RetrievalMTEB ArguAnamain_score56.713
RetrievalMTEB ArguAnamap_at_131.437
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