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Open-weight model · Feature extraction

bge-base-en-v1.5

by Beijing Academy of Artificial Intelligence BAAI/bge-base-en-v1.5

For more details please refer to our Github: FlagEmbedding. If you are looking for a model that supports more languages, longer texts, and other retrieval methods, you can try using bge-m3.

Parameters109M
Context512
Weights1.3 GB
Licensemit
AccessOpen weights
Monthly Downloads10.5M

Runs On

What it takes to serve bge-base-en-v1.5 (109M 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 0.2 GB 0.3 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
8-bit 0.1 GB 0.1 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
4-bit 0.1 GB 0.1 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-base-en-v1.5

If the plan is to embed a corpus once and query it for years, hardware is the smallest decision. At 16-bit the weights take 0.2 GB and the run needs 0.3 GB; at 8-bit and 4-bit both round to 0.1 GB. The cheapest listing, one MI300X with 192 GB at $1.85 per hour on-demand, is the smallest unit a host sells, not what a 109M-parameter, 12-layer BERT encoder needs; the 1.3 GB float32 checkpoint and what you co-locate matter more.

The MIT terms permit commercial use, modification and redistribution and ask only that the copyright and permission notices ride along. Check the 512-token context first; longer passages need chunking. The publisher's own note points anyone needing more languages at bge-m3, 100 plus of them. The scores shown are the publisher's own MTEB results, such as 93.39 accuracy on AmazonPolarityClassification, so run your own set before relying on them.

Model Card

By Beijing Academy of Artificial Intelligence, published under mit, revision a5beb1e3e68b.

FlagEmbedding

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

For more details please refer to our Github: FlagEmbedding.

If you are looking for a model that supports more languages, longer texts, and other retrieval methods, you can try using bge-m3.

English | 中文

FlagEmbedding focuses on retrieval-augmented LLMs, consisting of the following projects currently:

News

Read the full model card (2,710 words)

Configuration

Architecture
BertModel
Context length (tokens)
512
Layers
12
Hidden size
768
Feed-forward size
3,072
Attention heads
12
Vocabulary size
30,522
Stored precision
float32
Model type
bert

Identity and Version

Repository
BAAI/bge-base-en-v1.5
Publisher
Beijing Academy of Artificial Intelligence
Task
Feature extraction
Modality
Text
Library
sentence-transformers
Parameters
109M parameters
Languages
en
Revision
a5beb1e3e68b9ab74eb54cfd186867f64f240e1a
First published
2023-09-11
Last updated
2024-02-21

Files and Weights

14 files, 1.3 GB in total. The weights are 3 files totalling 1.3 GB in bin, onnx, safetensors.

Weights3 files · 1.3 GB
Configuration6 files · 1.6 KB
Tokenizer3 files · 943.3 KB
Documentation1 file · 94.6 KB
Repository1 file · 1.5 KB
Every file
FileTypeSizeSHA-256
model.safetensorsWeights438.0 MB c7c1988aae20
onnx/model.onnxWeights435.8 MB 9bc579acdba2
pytorch_model.binWeights438.0 MB 4b9d4a4b2d7a
1_Pooling/config.jsonConfiguration190 B
config.jsonConfiguration777 B
config_sentence_transformers.jsonConfiguration124 B
modules.jsonConfiguration349 B
sentence_bert_config.jsonConfiguration52 B
special_tokens_map.jsonConfiguration125 B
README.mdDocumentation94.6 KB
.gitattributesRepository1.5 KB
tokenizer.jsonTokenizer711.4 KB
tokenizer_config.jsonTokenizer366 B
vocab.txtTokenizer231.5 KB

License and Download

License
mit
Access
Open weights, no gate
Download size
1.3 GB
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

Evaluations

Each result is shown as reported, with the conditions its reporter stated. None is a SAVRN measurement. A comparison lines two results up only when their configuration, unit and setup are all stated and identical.

BenchmarkConditionsResultReported byRevisionDate
MTEB AmazonCounterfactualClassification (en) Configuration enTask ClassificationMetric accuracyComparison conditions not established 76.1493 BAAI
Publisher reported
Evaluated revision not stated
MTEB AmazonCounterfactualClassification (en) Configuration enTask ClassificationMetric apComparison conditions not established 39.3234 BAAI
Publisher reported
Evaluated revision not stated
MTEB AmazonCounterfactualClassification (en) Configuration enTask ClassificationMetric f1Comparison conditions not established 70.169 BAAI
Publisher reported
Evaluated revision not stated
MTEB AmazonPolarityClassification Configuration defaultTask ClassificationMetric accuracyComparison conditions not established 93.3868 BAAI
Publisher reported
Evaluated revision not stated
MTEB AmazonPolarityClassification Configuration defaultTask ClassificationMetric apComparison conditions not established 90.2128 BAAI
Publisher reported
Evaluated revision not stated
MTEB AmazonPolarityClassification Configuration defaultTask ClassificationMetric f1Comparison conditions not established 93.3774 BAAI
Publisher reported
Evaluated revision not stated
MTEB AmazonReviewsClassification (en) Configuration enTask ClassificationMetric accuracyComparison conditions not established 48.846 BAAI
Publisher reported
Evaluated revision not stated
MTEB AmazonReviewsClassification (en) Configuration enTask ClassificationMetric f1Comparison conditions not established 48.1465 BAAI
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric map_at_1Comparison conditions not established 40.754 BAAI
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric map_at_10Comparison conditions not established 55.761 BAAI
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric map_at_100Comparison conditions not established 56.331 BAAI
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric map_at_1000Comparison conditions not established 56.334 BAAI
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric map_at_3Comparison conditions not established 51.92 BAAI
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric map_at_5Comparison conditions not established 54.011 BAAI
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric mrr_at_1Comparison conditions not established 41.181 BAAI
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric mrr_at_10Comparison conditions not established 55.968 BAAI
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric mrr_at_100Comparison conditions not established 56.538 BAAI
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric mrr_at_1000Comparison conditions not established 56.542 BAAI
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric mrr_at_3Comparison conditions not established 51.98 BAAI
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric mrr_at_5Comparison conditions not established 54.209 BAAI
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric ndcg_at_1Comparison conditions not established 40.754 BAAI
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric ndcg_at_10Comparison conditions not established 63.605 BAAI
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric ndcg_at_100Comparison conditions not established 66.052 BAAI
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric ndcg_at_1000Comparison conditions not established 66.12 BAAI
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric ndcg_at_3Comparison conditions not established 55.708 BAAI
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric ndcg_at_5Comparison conditions not established 59.452 BAAI
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric precision_at_1Comparison conditions not established 40.754 BAAI
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric precision_at_10Comparison conditions not established 8.841 BAAI
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric precision_at_100Comparison conditions not established 0.991 BAAI
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric precision_at_1000Comparison conditions not established 0.1 BAAI
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric precision_at_3Comparison conditions not established 22.238 BAAI
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric precision_at_5Comparison conditions not established 15.149 BAAI
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric recall_at_1Comparison conditions not established 40.754 BAAI
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric recall_at_10Comparison conditions not established 88.407 BAAI
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric recall_at_100Comparison conditions not established 99.147 BAAI
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric recall_at_1000Comparison conditions not established 99.644 BAAI
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric recall_at_3Comparison conditions not established 66.714 BAAI
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric recall_at_5Comparison conditions not established 75.747 BAAI
Publisher reported
Evaluated revision not stated
MTEB ArxivClusteringP2P Configuration defaultTask ClusteringMetric v_measureComparison conditions not established 48.7488 BAAI
Publisher reported
Evaluated revision not stated
MTEB ArxivClusteringS2S Configuration defaultTask ClusteringMetric v_measureComparison conditions not established 42.8076 BAAI
Publisher reported
Evaluated revision not stated

Memory Requirements

PrecisionWeights in memory
As published1.3 GB
16-bit0.2 GB
8-bit0.1 GB
4-bit0.1 GB

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

Built on This Model

Compare bge-base-en-v1.5

Questions About bge-base-en-v1.5

How much GPU memory does bge-base-en-v1.5 need?

About 0.3 GB at 16-bit and 0.1 GB at 4-bit: the weights (109M parameters) plus a working margin. A long context needs more.

What is the cheapest GPU to run bge-base-en-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-base-en-v1.5 commercially?

Yes. bge-base-en-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-base-en-v1.5's context length?

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

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