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Open-weight model · Feature extraction

jina-embeddings-v2-small-en

by Jina AI jinaai/jina-embeddings-v2-small-en

The easiest way to starting using jina-embeddings-v2-small-en is to use Jina AI's Embedding API. jina-embeddings-v2-small-en is an English, monolingual embedding model supporting 8192 sequence length.

Parameters33M
Context8,192
Weights522.0 MB
Licenseapache-2.0
AccessOpen weights
Monthly Downloads924k

Runs On

What it takes to serve jina-embeddings-v2-small-en (33M 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 0.1 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 jina-embeddings-v2-small-en

Turning English text into vectors is the whole job here, and the 8,192 token window lets a full contract or filing go in as one piece. It is 33 million parameters in four layers, stored in float32, about 523 MB on disk. At 16-bit it needs 0.1 GB of memory, so the cheapest Index setup, one MI300X at $1.85 an hour, is far more card than the job calls for; in practice it shares a GPU with a generator, and the publisher also ships ONNX and CoreML builds.

Apache 2.0 permits commercial use, modification and redistribution, provided you keep the license and NOTICE files and state significant changes, and access is open. Before committing, confirm an English-only model fits your corpus, and read the ALiBi paper listed against it for how the 8,192 length is reached. The training relations name the C4 backbone and the publisher's negation dataset.

Model Card

By Jina AI, published under apache-2.0, revision 44e7d1d6caec.



The text embedding set trained by Jina AI.

Quick Start

The easiest way to starting using jina-embeddings-v2-small-en is to use Jina AI's Embedding API.

Intended Usage & Model Info

jina-embeddings-v2-small-en is an English, monolingual embedding model supporting 8192 sequence length. It is based on a BERT architecture (JinaBERT) that supports the symmetric bidirectional variant of ALiBi to allow longer sequence length. The backbone jina-bert-v2-small-en is pretrained on the C4 dataset. The model is further trained on Jina AI's collection of more than 400 millions of sentence pairs and hard negatives. These pairs were obtained from various domains and were carefully selected through a thorough cleaning process.

Read the full model card (784 words)

Configuration

Architecture
JinaBertForMaskedLM
Context length (tokens)
8,192
Layers
4
Hidden size
512
Feed-forward size
2,048
Attention heads
8
Vocabulary size
30,528
Stored precision
float32
Model type
bert

Identity and Version

Repository
jinaai/jina-embeddings-v2-small-en
Publisher
Jina AI
Task
Feature extraction
Modality
Text
Library
sentence-transformers
Parameters
33M parameters
Languages
en
Revision
44e7d1d6caec8c883c2d4b207588504d519788d0
First published
2023-09-27
Last updated
2025-01-06

Files and Weights

19 files, 523.0 MB in total. The weights are 6 files totalling 522.0 MB in bin, mlmodel, onnx, safetensors.

Weights6 files · 522.0 MB
Configuration8 files · 2.6 KB
Tokenizer3 files · 943.5 KB
Documentation1 file · 70.6 KB
Repository1 file · 1.5 KB
Every file
FileTypeSizeSHA-256
coreml/float32_model.mlpackage/Data/com.apple.CoreML/model.mlmodelWeights48.7 KB df2a5079c312
coreml/float32_model.mlpackage/Data/com.apple.CoreML/weights/weight.binWeights131.6 MB ab10bc04d4f1
model-w-mean-pooling.onnxWeights129.8 MB c5412c83114b
model.onnxWeights129.8 MB 974fdefe71fc
model.safetensorsWeights65.4 MB c9a9a7ec012d
pytorch_model.binWeights65.4 MB 54c94f036922
1_Pooling/config.jsonConfiguration190 B
config.jsonConfiguration1.2 KB
config_sentence_transformers.jsonConfiguration117 B
coreml/float32_model.mlpackage/Manifest.jsonConfiguration617 B
generation_config.jsonConfiguration90 B
modules.jsonConfiguration229 B
sentence_bert_config.jsonConfiguration99 B
special_tokens_map.jsonConfiguration125 B
README.mdDocumentation70.6 KB
.gitattributesRepository1.5 KB
tokenizer.jsonTokenizer711.6 KB
tokenizer_config.jsonTokenizer373 B
vocab.txtTokenizer231.6 KB

License and Download

License
apache-2.0
Access
Open weights, no gate
Download size
522.0 MB
Download from Jina AI

Released by Jina AI 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 71.3582 jinaai
Publisher reported
Evaluated revision not stated
MTEB AmazonCounterfactualClassification (en) Configuration enTask ClassificationMetric apComparison conditions not established 33.9993 jinaai
Publisher reported
Evaluated revision not stated
MTEB AmazonCounterfactualClassification (en) Configuration enTask ClassificationMetric f1Comparison conditions not established 65.3854 jinaai
Publisher reported
Evaluated revision not stated
MTEB AmazonPolarityClassification Configuration defaultTask ClassificationMetric accuracyComparison conditions not established 82.9014 jinaai
Publisher reported
Evaluated revision not stated
MTEB AmazonPolarityClassification Configuration defaultTask ClassificationMetric apComparison conditions not established 78.0143 jinaai
Publisher reported
Evaluated revision not stated
MTEB AmazonPolarityClassification Configuration defaultTask ClassificationMetric f1Comparison conditions not established 82.8336 jinaai
Publisher reported
Evaluated revision not stated
MTEB AmazonReviewsClassification (en) Configuration enTask ClassificationMetric accuracyComparison conditions not established 40.89 jinaai
Publisher reported
Evaluated revision not stated
MTEB AmazonReviewsClassification (en) Configuration enTask ClassificationMetric f1Comparison conditions not established 39.2094 jinaai
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric map_at_1Comparison conditions not established 23.257 jinaai
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric map_at_10Comparison conditions not established 37.946 jinaai
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric map_at_100Comparison conditions not established 39.17 jinaai
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric map_at_1000Comparison conditions not established 39.181 jinaai
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric map_at_3Comparison conditions not established 32.99 jinaai
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric map_at_5Comparison conditions not established 35.468 jinaai
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric mrr_at_1Comparison conditions not established 23.542 jinaai
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric mrr_at_10Comparison conditions not established 38.057 jinaai
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric mrr_at_100Comparison conditions not established 39.289 jinaai
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric mrr_at_1000Comparison conditions not established 39.299 jinaai
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric mrr_at_3Comparison conditions not established 33.096 jinaai
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric mrr_at_5Comparison conditions not established 35.628 jinaai
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric ndcg_at_1Comparison conditions not established 23.257 jinaai
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric ndcg_at_10Comparison conditions not established 46.729 jinaai
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric ndcg_at_100Comparison conditions not established 51.901 jinaai
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric ndcg_at_1000Comparison conditions not established 52.16 jinaai
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric ndcg_at_3Comparison conditions not established 36.323 jinaai
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric ndcg_at_5Comparison conditions not established 40.767 jinaai
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric precision_at_1Comparison conditions not established 23.257 jinaai
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric precision_at_10Comparison conditions not established 7.511 jinaai
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric precision_at_100Comparison conditions not established 0.976 jinaai
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric precision_at_1000Comparison conditions not established 0.1 jinaai
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric precision_at_3Comparison conditions not established 15.339 jinaai
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric precision_at_5Comparison conditions not established 11.351 jinaai
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric recall_at_1Comparison conditions not established 23.257 jinaai
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric recall_at_10Comparison conditions not established 75.107 jinaai
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric recall_at_100Comparison conditions not established 97.582 jinaai
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric recall_at_1000Comparison conditions not established 99.573 jinaai
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric recall_at_3Comparison conditions not established 46.017 jinaai
Publisher reported
Evaluated revision not stated
MTEB ArguAna Configuration defaultTask RetrievalMetric recall_at_5Comparison conditions not established 56.757 jinaai
Publisher reported
Evaluated revision not stated
MTEB ArxivClusteringP2P Configuration defaultTask ClusteringMetric v_measureComparison conditions not established 44.0242 jinaai
Publisher reported
Evaluated revision not stated
MTEB ArxivClusteringS2S Configuration defaultTask ClusteringMetric v_measureComparison conditions not established 35.1614 jinaai
Publisher reported
Evaluated revision not stated

Memory Requirements

PrecisionWeights in memory
As published522.0 MB
16-bit0.1 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 jina-embeddings-v2-small-en

Questions About jina-embeddings-v2-small-en

How much GPU memory does jina-embeddings-v2-small-en need?

About 0.1 GB at 16-bit and 0 GB at 4-bit: the weights (33M parameters) plus a working margin. A long context needs more.

What is the cheapest GPU to run jina-embeddings-v2-small-en 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 jina-embeddings-v2-small-en commercially?

Yes. jina-embeddings-v2-small-en is released under Apache License 2.0. The Apache License 2.0 is a permissive open-source license. It permits commercial use, modification and redistribution. It requires keeping the license and copyright notices and any NOTICE file, stating significant changes, and it includes an express patent grant from contributors.

What is jina-embeddings-v2-small-en's context length?

8,192 tokens, from the maximum position embeddings in its published configuration.

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