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Open-weight model · Translation

t5-3b

by T5 community google-t5/t5-3b

The developers of the Text-To-Text Transfer Transformer (T5) write: T5-3B is the checkpoint with 3 billion parameters. The developers write in a blog post that the model: See the blog post and research paper for further details.

Parameters2.9B
Context
Weights34.2 GB
Licenseapache-2.0
AccessOpen weights
Monthly Downloads349.2k

Runs On

What it takes to serve t5-3b (2.9B 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 5.7 GB 6.8 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
8-bit 2.9 GB 3.4 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
4-bit 1.4 GB 1.7 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 t5-3b

Why does a 2.9B-parameter checkpoint weigh 34.2 GB on disk? Because the T5 community publishes it in three artifact formats, safetensors, PyTorch and TensorFlow, across eight files, and you only need one. Loaded at 16-bit, t5-3b is 5.7 GB of weights and 6.8 GB of working memory, or 3.4 GB at 8-bit. The cheapest listed setup is one 192 GB MI300X at $1.85 per hour on-demand, far more card than it needs. Pre-trained on C4 and listed for translation, it is a fixed transformer of text, not a chat model.

Apache 2.0 lets you fine-tune it, ship it inside a product and redistribute the result, provided the notices stay. No context length is stated, so measure it on your own inputs before sizing a batch. The last update was January 29, 2024, and the seven described-by papers, among them SQuAD, WiC, ReCoRD and BoolQ, describe benchmarks, not scores.

Model Card

By T5 community, published under apache-2.0, revision bed96aab9ee4.

Model Card for T5-3B

Table of Contents

  1. Model Details
  2. Uses
  3. Bias, Risks, and Limitations
  4. Training Details
  5. Evaluation
  6. Environmental Impact
  7. Citation
  8. Model Card Authors
  9. How To Get Started With the Model

Model Details

Model Description

The developers of the Text-To-Text Transfer Transformer (T5) write:

With T5, we propose reframing all NLP tasks into a unified text-to-text-format where the input and output are always text strings, in contrast to BERT-style models that can only output either a class label or a span of the input. Our text-to-text framework allows us to use the same model, loss function, and hyperparameters on any NLP task.

T5-3B is the checkpoint with 3 billion parameters.

Read the full model card (744 words)

Configuration

Architecture
T5WithLMHeadModel
Vocabulary size
32,128
Model type
t5

Identity and Version

Repository
google-t5/t5-3b
Publisher
T5 community
Task
Translation
Modality
Text
Library
transformers
Parameters
2.9B parameters
Languages
en, fr, ro, de
Revision
bed96aab9ee46012a5046386105ee5fd0ac572f0
First published
2022-03-02
Last updated
2024-01-29

Files and Weights

8 files, 34.2 GB in total. The weights are 3 files totalling 34.2 GB in bin, h5, safetensors.

Weights3 files · 34.2 GB
Configuration1 file · 1.2 KB
Tokenizer2 files · 2.2 MB
Documentation1 file · 7.9 KB
Repository1 file · 399 B
Every file
FileTypeSizeSHA-256
model.safetensorsWeights11.4 GB a0e6c24ae12d
pytorch_model.binWeights11.4 GB da4034ddd253
tf_model.h5Weights11.4 GB 85e93c65d8bc
config.jsonConfiguration1.2 KB
README.mdDocumentation7.9 KB
.gitattributesRepository399 B
spiece.modelTokenizer791.7 KB
tokenizer.jsonTokenizer1.4 MB

License and Download

License
apache-2.0
Access
Open weights, no gate
Download size
34.2 GB
Download from T5 community

Released by T5 community through its official repository on Hugging Face. Read the license.

Built From

Memory Requirements

PrecisionWeights in memory
As published34.2 GB
16-bit5.7 GB
8-bit2.9 GB
4-bit1.4 GB

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

Questions About t5-3b

How much GPU memory does t5-3b need?

About 6.8 GB at 16-bit and 1.7 GB at 4-bit: the weights (2.9B parameters) plus a working margin. A long context needs more.

What is the cheapest GPU to run t5-3b 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 t5-3b commercially?

Yes. t5-3b 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.

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