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Open-weight model · Text ranking

llama-nemotron-rerank-1b-v2

by NVIDIA nvidia/llama-nemotron-rerank-1b-v2

The Llama Nemotron Reranking 1B model is optimized for providing a logit score that represents how relevant a document(s) is to a given query.

Parameters1.2B
Context131,072
Weights4.9 GB
Licenseother
AccessOpen weights
Monthly Downloads981.9k

Runs On

What it takes to serve llama-nemotron-rerank-1b-v2 (1.2B 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 2.5 GB 3.0 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
8-bit 1.2 GB 1.5 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
4-bit 0.6 GB 0.7 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 llama-nemotron-rerank-1b-v2

A reranker sits between the retriever and the generator, and this one returns a logit score for how relevant a document is to a query. NVIDIA fine-tuned it for multilingual and cross-lingual question-answering retrieval and evaluated it across 26 languages, with document support up to 8,192 tokens even though the configuration allows 131,072 positions. At 1.2B parameters the 16-bit weights take 2.5 GB and the run needs 3.0 GB; 4-bit brings that to 0.7 GB. The cheapest priced setup, one MI300X with 192 GB at $1.85 an hour on-demand, is far more card than this needs, so co-locate it with the generator.

The license is listed only as other, with no summary, so read the publisher's terms yourself before anything commercial goes live. Chunk to the 8,192-token document limit, not the config figure, and note the last update was 2026-08-26, so pin the revision you validated.

Model Card

The Llama Nemotron Reranking 1B model is optimized for providing a logit score that represents how relevant a document(s) is to a given query. The model was fine-tuned for multilingual, cross-lingual text question-answering retrieval, with support for long documents (up to 8192 tokens). This model was evaluated on 26 languages: English, Arabic, Bengali, Chinese, Czech, Danish, Dutch, Finnish, French, German, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Korean, Norwegian, Persian, Polish, Portuguese, Russian, Spanish, Swedish, Thai, and Turkish. This model is a component in a text retrieval system to improve the overall accuracy. A text retrieval system often uses an embedding…

Excerpt from the card by NVIDIA, licensed other.

Configuration

Architecture
LlamaBidirectionalForSequenceClassification
Context length (tokens)
131,072
Layers
16
Hidden size
2,048
Feed-forward size
8,192
Attention heads
32
Key/value heads
8
Head dimension
64
Vocabulary size
128,256
RoPE base
500000
Stored precision
bfloat16
Model type
llama_bidirec

Identity and Version

Repository
nvidia/llama-nemotron-rerank-1b-v2
Publisher
NVIDIA
Task
Text ranking
Modality
Other
Library
transformers
Parameters
1.2B parameters
Languages
Not stated by the source
Revision
828765652b05bd439c9789d2a6d093db1caa1443
First published
2025-10-16
Last updated
2026-08-26

Files and Weights

13 files, 5.0 GB in total. The weights are 2 files totalling 4.9 GB in bin, safetensors.

Weights2 files · 4.9 GB
Configuration5 files · 42.2 KB
Tokenizer2 files · 9.1 MB
Documentation3 files · 25.8 KB
Repository1 file · 1.5 KB
Every file
FileTypeSizeSHA-256
model.safetensorsWeights2.5 GB 7d60ff24db62
pytorch_model.binWeights2.5 GB cbe7ebaf3499
config.jsonConfiguration1.3 KB
llama_bidirectional_model.pyConfiguration14.4 KB
special_tokens_map.jsonConfiguration449 B
trainer_state.jsonConfiguration727 B
zero_to_fp32.pyConfiguration25.3 KB
CONTRIBUTING.mdDocumentation2.5 KB
LICENSEDocumentation2.8 KB
README.mdDocumentation20.5 KB
.gitattributesRepository1.5 KB
tokenizer.jsonTokenizer9.1 MB
tokenizer_config.jsonTokenizer50.5 KB

License and Download

License
other
Access
Open weights, no gate
Download size
4.9 GB
Download from NVIDIA

Released by NVIDIA through its official repository on Hugging Face.

Memory Requirements

PrecisionWeights in memory
As published4.9 GB
16-bit2.5 GB
8-bit1.2 GB
4-bit0.6 GB

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

Compare llama-nemotron-rerank-1b-v2

Questions About llama-nemotron-rerank-1b-v2

How much GPU memory does llama-nemotron-rerank-1b-v2 need?

About 3 GB at 16-bit and 0.7 GB at 4-bit: the weights (1.2B parameters) plus a working margin. A long context needs more.

What is the cheapest GPU to run llama-nemotron-rerank-1b-v2 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.

What license is llama-nemotron-rerank-1b-v2 released under?

other, as its publisher declares it. Read the license text before commercial use.

What is llama-nemotron-rerank-1b-v2's context length?

131,072 tokens, from the maximum position embeddings in its published configuration.

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