Model reference · open weights

sentence-t5

Embeddings sentence-transformers Embeddings 1 build Open weights 155k dl/mo

sentence-t5 is an open-weight embedding model from sentence-transformers. sentence-t5-base (FP16) weighs 219 MB; the smallest configuration that runs it is RTX 3060 12 GB.

  • sentence-t5 is a sentence-similarity model developed by sentence-transformers that maps text to a 768-dimensional vector space.
  • It utilizes the encoder from a T5-base model and contains 110M parameters.
  • The model supports English with a context length of 512 tokens and is released under the apache-2.0 licence.

Summary of the sentence-transformers/sentence-t5-base model card, 2026-10-01

What it is

Released bysentence-transformers
Released2022-03-02
Parameters110M
VRAM219 MB for the weights

What it runs on

Memory and cards for sentence-t5-base (FP16)

219 MBweights, file size
1.1 GBruntime overhead
CardRunsMemory
RTX 3060 12 GBfits11.6 GB
RTX 4060 Ti 16 GBfits15.4 GB
RTX 3090 24 GBfits23.4 GB
RTX 4090 24 GBfits23.4 GB
RTX 5090 32 GBfits31.0 GB
L40S 48 GBfits44.0 GB
A100 80 GBfits78.2 GB
H100 80 GBfits78.1 GB
RTX PRO 6000 Blackwell 96 GBfits93.8 GB
DGX Spark (GB10) 128 GB unifiedfits107 GB
H200 141 GBfits138 GB
B200 180 GBfits176 GB

From the model card

What sentence-transformers says about sentence-t5

Read the model card

This is a sentence-transformers model: It maps sentences & paragraphs to a 768 dimensional dense vector space. The model works well for sentence similarity tasks, but doesn't perform that well for semantic search tasks.

This model was converted from the Tensorflow model st5-base-1 to PyTorch. When using this model, have a look at the publication: Sentence-T5: Scalable sentence encoders from pre-trained text-to-text models. The tfhub model and this PyTorch model can produce slightly different embeddings, however, when run on the same benchmarks, they produce identical results.

The model uses only the encoder from a T5-base model. The weights are stored in FP16.

Usage (Sentence-Transformers)

Using this model becomes easy when you have sentence-transformers installed:

pip install -U sentence-transformers

Then you can use the model like this:

from sentence_transformers import SentenceTransformer
sentences = ["This is an example sentence", "Each sentence is converted"]

model = SentenceTransformer('sentence-transformers/sentence-t5-base')
embeddings = model.encode(sentences)
print(embeddings)

The model requires sentence-transformers version 2.2.0 or newer.

Citing & Authors

If you find this model helpful, please cite the respective publication: Sentence-T5: Scalable sentence encoders from pre-trained text-to-text models

Quoted from the model card on Hugging Face. The full card is behind the Hugging Face link above.

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