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Open-weight model · Sentence similarity

nomic-embed-text-v1.5

by Nomic AI nomic-ai/nomic-embed-text-v1.5

nomic-embed-text-v1.5 is an open-weight model for sentence similarity from Nomic AI, released under Apache License 2.0. It has 137M parameters and a 2,048-token context. At 16-bit it needs about 0.3 GB of GPU memory, which fits on 1x MI300X from $1.85 an hour, at the lowest prices in the SAVRN Index. It draws 13.2M downloads a month.

Exciting Update!: nomic-embed-text-v1.5 is now multimodal! nomic-embed-vision-v1.5 is aligned to the embedding space of nomic-embed-text-v1.5, meaning any text embedding is multimodal!

Parameters137M
Context2,048
Weights2.2 GB
Licenseapache-2.0
AccessOpen weights
Monthly Downloads13.2M

Runs On

What it takes to serve nomic-embed-text-v1.5 (137M 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 0.3 GB 0.3 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
8-bit 0.1 GB 0.2 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 Oct 16, 2026.

nomic-embed-text-v1.5 on every accelerator the SAVRN Index prices, at every precision

SAVRN's Notes on nomic-embed-text-v1.5

137M parameters, a 2,048-token context, 0.3 GB at 16-bit, 0.1 GB at 4-bit: this sentence embedder is a passenger on whatever card you already run. The files are the interesting part — nine weight builds including ONNX fp16, int8, uint8, bnb4, q4 and q4f16 alongside model.safetensors — so CPU and edge deployments are first-class rather than afterthought conversions. The cheapest setup we price is one 192 GB MI300X at $1.85 an hour.

Apache 2.0 permits commercial use with notices kept. Two operational details from the card: every input string needs a task instruction prefix — search_document: for corpus text, search_query: for queries — and the model is built on Matryoshka Representation Learning, so you can resize output dimensions to trade recall for footprint. Loaders older than transformers 5.5.0 and sentence-transformers 5.3.0 need trust_remote_code. A companion vision model shares the embedding space, so text and images can index together.

Model Card

By Nomic AI, published under apache-2.0, revision e9b6763023c6.

nomic-embed-text-v1.5: Resizable Production Embeddings with Matryoshka Representation Learning

Blog | Technical Report | AWS SageMaker | Nomic Platform

Exciting Update!: nomic-embed-text-v1.5 is now multimodal! nomic-embed-vision-v1.5 is aligned to the embedding space of nomic-embed-text-v1.5, meaning any text embedding is multimodal!

Usage

Important: the text prompt must include a task instruction prefix, instructing the model which task is being performed.

For example, if you are implementing a RAG application, you embed your documents as search_document: <text here> and embed your user queries as search_query: <text here>.

Notice: From transformers v5.5.0 and sentence transformers v5.3.0, trust_remote_code=True will no longer be necessary. This will only be possible with the text-only series as of now.

Task instruction prefixes

search_document

Purpose: embed texts as documents from a dataset

This prefix is used for embedding texts as documents, for example as documents for a RAG index.

Read the full model card (884 words)

Configuration

Architecture
NomicBertModel
Context length (tokens)
2,048
Layers
12
Hidden size
768
Feed-forward size
3,072
Attention heads
12
Head dimension
64
Vocabulary size
30,528
Stored precision
float32
Model type
nomic_bert

Identity and Version

Repository
nomic-ai/nomic-embed-text-v1.5
Publisher
Nomic AI
Task
Sentence similarity
Modality
Text
Library
sentence-transformers
Parameters
137M parameters
Languages
en
Revision
e9b6763023c676ca8431644204f50c2b100d9aab
First published
2024-02-10
Last updated
2026-04-07

Files and Weights

20 files, 2.2 GB in total. The weights are 9 files totalling 2.2 GB in onnx, safetensors.

Weights9 files · 2.2 GB
Configuration6 files · 4.0 KB
Tokenizer3 files · 944.1 KB
Documentation1 file · 71.8 KB
Repository1 file · 1.5 KB
Every file
FileTypeSizeSHA-256
model.safetensorsWeights546.9 MB 9e7d262b1fe5
onnx/model.onnxWeights547.3 MB 147d5aa88c21
onnx/model_bnb4.onnxWeights158.0 MB eb81cef4642a
onnx/model_fp16.onnxWeights273.9 MB cf5b5a86edb0
onnx/model_int8.onnxWeights137.3 MB b4342336deba
onnx/model_q4.onnxWeights165.1 MB 314976b7b9fb
onnx/model_q4f16.onnxWeights111.1 MB 3dbab6709d86
onnx/model_quantized.onnxWeights137.3 MB b4342336deba
onnx/model_uint8.onnxWeights137.3 MB f7ee635388c9
1_Pooling/config.jsonConfiguration286 B —
config.jsonConfiguration2.5 KB —
config_sentence_transformers.jsonConfiguration140 B —
modules.jsonConfiguration255 B —
sentence_bert_config.jsonConfiguration58 B —
special_tokens_map.jsonConfiguration695 B —
README.mdDocumentation71.8 KB —
.gitattributesRepository1.5 KB —
tokenizer.jsonTokenizer711.4 KB —
tokenizer_config.jsonTokenizer1.2 KB —
vocab.txtTokenizer231.5 KB —

License and Download

License
apache-2.0
Access
Open weights, no gate
Download size
2.2 GB
Download from Nomic AI

Released by Nomic 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 75.209 nomic-ai
Publisher reported
Evaluated revision not stated —
MTEB AmazonCounterfactualClassification (en) Configuration enTask ClassificationMetric apComparison conditions not established 38.5761 nomic-ai
Publisher reported
Evaluated revision not stated —
MTEB AmazonCounterfactualClassification (en) Configuration enTask ClassificationMetric f1Comparison conditions not established 69.3559 nomic-ai
Publisher reported
Evaluated revision not stated —
MTEB AmazonPolarityClassification Configuration defaultTask ClassificationMetric accuracyComparison conditions not established 91.8144 nomic-ai
Publisher reported
Evaluated revision not stated —
MTEB AmazonPolarityClassification Configuration defaultTask ClassificationMetric apComparison conditions not established 88.6522 nomic-ai
Publisher reported
Evaluated revision not stated —
MTEB AmazonPolarityClassification Configuration defaultTask ClassificationMetric f1Comparison conditions not established 91.8043 nomic-ai
Publisher reported
Evaluated revision not stated —
MTEB AmazonReviewsClassification (en) Configuration enTask ClassificationMetric accuracyComparison conditions not established 47.162 nomic-ai
Publisher reported
Evaluated revision not stated —
MTEB AmazonReviewsClassification (en) Configuration enTask ClassificationMetric f1Comparison conditions not established 46.5933 nomic-ai
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric map_at_1Comparison conditions not established 24.253 nomic-ai
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric map_at_10Comparison conditions not established 38.962 nomic-ai
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric map_at_100Comparison conditions not established 40.081 nomic-ai
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric map_at_1000Comparison conditions not established 40.089 nomic-ai
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric map_at_3Comparison conditions not established 33.499 nomic-ai
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric map_at_5Comparison conditions not established 36.351 nomic-ai
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric mrr_at_1Comparison conditions not established 24.609 nomic-ai
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric mrr_at_10Comparison conditions not established 39.099 nomic-ai
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric mrr_at_100Comparison conditions not established 40.211 nomic-ai
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric mrr_at_1000Comparison conditions not established 40.219 nomic-ai
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric mrr_at_3Comparison conditions not established 33.677 nomic-ai
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric mrr_at_5Comparison conditions not established 36.469 nomic-ai
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric ndcg_at_1Comparison conditions not established 24.253 nomic-ai
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric ndcg_at_10Comparison conditions not established 48.011 nomic-ai
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric ndcg_at_100Comparison conditions not established 52.756 nomic-ai
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric ndcg_at_1000Comparison conditions not established 52.965 nomic-ai
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric ndcg_at_3Comparison conditions not established 36.564 nomic-ai
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric ndcg_at_5Comparison conditions not established 41.712 nomic-ai
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric precision_at_1Comparison conditions not established 24.253 nomic-ai
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric precision_at_10Comparison conditions not established 7.738 nomic-ai
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric precision_at_100Comparison conditions not established 0.98 nomic-ai
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric precision_at_1000Comparison conditions not established 0.1 nomic-ai
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric precision_at_3Comparison conditions not established 15.149 nomic-ai
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric precision_at_5Comparison conditions not established 11.593 nomic-ai
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric recall_at_1Comparison conditions not established 24.253 nomic-ai
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric recall_at_10Comparison conditions not established 77.383 nomic-ai
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric recall_at_100Comparison conditions not established 98.009 nomic-ai
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric recall_at_1000Comparison conditions not established 99.644 nomic-ai
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric recall_at_3Comparison conditions not established 45.448 nomic-ai
Publisher reported
Evaluated revision not stated —
MTEB ArguAna Configuration defaultTask RetrievalMetric recall_at_5Comparison conditions not established 57.966 nomic-ai
Publisher reported
Evaluated revision not stated —
mteb/arguana Task ArguAnaMetric ArguAnaSetup Obtained using MTEB v1.18.0Comparison conditions not established 52.018 Obtained using MTEB v1.18.0
Reported by a third party
Evaluated revision not stated 2026-03-05
mteb/arguana Task ArguAna_default_testMetric ArguAna_default_testSetup Obtained using MTEB v1.18.0Comparison conditions not established 52.018 Obtained using MTEB v1.18.0
Reported by a third party
Evaluated revision not stated 2026-03-05

Memory Requirements

PrecisionWeights in memory
As published2.2 GB
16-bit0.3 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.

Compare nomic-embed-text-v1.5

Questions About nomic-embed-text-v1.5

How much GPU memory does nomic-embed-text-v1.5 need?

About 0.3 GB at 16-bit and 0.1 GB at 4-bit: the weights (137M parameters) plus a working margin. A long context needs more.

What is the cheapest GPU to run nomic-embed-text-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 nomic-embed-text-v1.5 commercially?

Yes. nomic-embed-text-v1.5 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 nomic-embed-text-v1.5's context length?

2,048 tokens, from the maximum position embeddings in its published configuration.

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