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Open-weight model · Feature extraction

bge-small-zh-v1.5

by Beijing Academy of Artificial Intelligence BAAI/bge-small-zh-v1.5

More details please refer to our Github: FlagEmbedding. FlagEmbedding can map any text to a low-dimensional dense vector which can be used for tasks like retrieval, classification, clustering, or semantic search.

Parameters24M
Context512
Weights191.7 MB
Licensemit
AccessOpen weights
Monthly Downloads5.1M

Runs On

What it takes to serve bge-small-zh-v1.5 (24M parameters): the memory its weights need at each precision, and the cheapest way to rent enough data-center GPUs to hold them.

PrecisionWeightsMemory neededCheapest setupPer hourAlso fits
16-bit 0.0 GB 0.1 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
8-bit 0.0 GB 0.0 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
4-bit 0.0 GB 0.0 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00

Memory is the weights at that precision plus 20% for the runtime and a short context; a long context needs more. Prices are the lowest on-demand hourly rates in the SAVRN Index, read Sep 18, 2026.

SAVRN's Notes on bge-small-zh-v1.5

Twenty-four million parameters is a rounding error next to a 192 GB accelerator. bge-small-zh-v1.5 turns Chinese text into dense vectors for retrieval, clustering, classification and semantic search. At 16-bit it needs 0.1 GB, and at 8-bit or 4-bit the figure rounds to zero, so the cheapest Index listing, one MI300X at $1.85 an hour, is the floor of the price board, not a requirement of this model; it runs on whatever memory the model it serves leaves free.

Fine-tuning on a private corpus is the usual path for an embedding model, and MIT allows it: commercial use, modification and redistribution, with the copyright and permission notices kept. Two checks first: the 512-token window against your document lengths, since longer documents get split before embedding, and the two papers it traces to, arXiv:2309.07597 on C-Pack and arXiv:2310.07554 on retrieval augmentation. The weights have not moved since October 2023.

Model Card

By Beijing Academy of Artificial Intelligence, published under mit, revision 7999e1d33597.

FlagEmbedding

Model List | FAQ | Usage | Evaluation | Train | Contact | Citation | License

More details please refer to our Github: FlagEmbedding.

English | 中文

FlagEmbedding can map any text to a low-dimensional dense vector which can be used for tasks like retrieval, classification, clustering, or semantic search. And it also can be used in vector databases for LLMs.

Read the full model card (2,392 words)

Configuration

Architecture
BertModel
Context length (tokens)
512
Layers
4
Hidden size
512
Feed-forward size
2,048
Attention heads
8
Vocabulary size
21,128
Stored precision
float32
Model type
bert

Identity and Version

Repository
BAAI/bge-small-zh-v1.5
Publisher
Beijing Academy of Artificial Intelligence
Task
Feature extraction
Modality
Text
Library
transformers
Parameters
24M parameters
Languages
zh
Revision
7999e1d3359715c523056ef9478215996d62a620
First published
2023-09-12
Last updated
2023-10-12

Files and Weights

13 files, 192.3 MB in total. The weights are 2 files totalling 191.7 MB in bin, safetensors.

Weights2 files · 191.7 MB
Configuration6 files · 1.6 KB
Tokenizer3 files · 549.0 KB
Documentation1 file · 27.7 KB
Repository1 file · 1.5 KB
Every file
FileTypeSizeSHA-256
model.safetensorsWeights95.8 MB 354763b9b135
pytorch_model.binWeights95.8 MB 7c5fe667bbed
1_Pooling/config.jsonConfiguration190 B
config.jsonConfiguration776 B
config_sentence_transformers.jsonConfiguration124 B
modules.jsonConfiguration349 B
sentence_bert_config.jsonConfiguration52 B
special_tokens_map.jsonConfiguration125 B
README.mdDocumentation27.7 KB
.gitattributesRepository1.5 KB
tokenizer.jsonTokenizer439.1 KB
tokenizer_config.jsonTokenizer367 B
vocab.txtTokenizer109.5 KB

License and Download

License
mit
Access
Open weights, no gate
Download size
191.7 MB
Download from Beijing Academy of Artificial Intelligence

Released by Beijing Academy of Artificial Intelligence through its official repository on Hugging Face. Read the license.

Built From

Memory Requirements

PrecisionWeights in memory
As published191.7 MB
16-bit0.0 GB
8-bit0.0 GB
4-bit0.0 GB

Weights only, from the published parameter count; the key-value cache and runtime add to this.

Compare bge-small-zh-v1.5

Questions About bge-small-zh-v1.5

How much GPU memory does bge-small-zh-v1.5 need?

About 0.1 GB at 16-bit and 0 GB at 4-bit: the weights (24M parameters) plus a working margin. A long context needs more.

What is the cheapest GPU to run bge-small-zh-v1.5 on?

At 16-bit, 1x MI300X from $1.85 an hour; at 4-bit, 1x MI300X from $1.85 an hour, at the lowest on-demand prices the SAVRN Index lists.

Can I use bge-small-zh-v1.5 commercially?

Yes. bge-small-zh-v1.5 is released under MIT License. The MIT License is a short permissive license. It permits commercial use, modification and redistribution, provided the copyright notice and permission notice are included.

What is bge-small-zh-v1.5's context length?

512 tokens, from the maximum position embeddings in its published configuration.

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