See our collection for all versions of XLM-RoBERTa.

Run XLM-RoBERTa with Keras 3: JAX, PyTorch, or TensorFlow

kerasformers/xlm_roberta_base

Paper: Unsupervised Cross-lingual Representation Learning at Scale (arXiv:1911.02116) · HF Papers

XLM-RoBERTa is the multilingual RoBERTa: same encoder architecture, pretrained on 2.5TB CommonCrawl across 100 languages, with a 250k SentencePiece vocabulary (mask token <mask>).

For more details on the model, please go to the upstream model card.

Pure-Keras 3 conversion of FacebookAI/xlm-roberta-base for kerasformers. One implementation runs unmodified on TensorFlow / Torch / JAX.

This is a fill-mask / encoder checkpoint (XLMRobertaMaskedLM, base). Task heads load via hf: fine-tunes.

✨ Quick start (multilingual fill-mask)

import os
os.environ["KERAS_BACKEND"] = "torch"  # or "jax" / "tensorflow"

from kerasformers.models.xlm_roberta import (
    XLMRobertaMaskedLM,
    XLMRobertaTokenizer,
)

mlm = XLMRobertaMaskedLM.from_weights("kerasformers/xlm_roberta_base")
tokenizer = XLMRobertaTokenizer.from_weights("kerasformers/xlm_roberta_base")

# Multilingual: same <mask> API as RoBERTa, 100-language SentencePiece vocab.
inputs = tokenizer("La capitale de la France est <mask>.")
logits = mlm(inputs)  # (1, L, vocab_size)
mask = int((inputs["input_ids"][0] == tokenizer.mask_token_id).argmax())
print(tokenizer.decode([int(logits[0, mask].argmax())]))

Load any XLM-RoBERTa variant the same way with from_weights("kerasformers/<variant>"):

Variant	Hub
`xlm_roberta_base`	`kerasformers/xlm_roberta_base`
`xlm_roberta_large`	`kerasformers/xlm_roberta_large`

Tips

Set KERAS_BACKEND before importing Keras / kerasformers.
Prefer XLMRobertaTokenizer.from_weights(...) so the SentencePiece vocab matches.
Use <mask> (not [MASK]).
See XLM-RoBERTa docs and Loading Weights.
Community / upstream safetensors still work via the hf: prefix, e.g. XLMRobertaMaskedLM.from_weights("hf:FacebookAI/xlm-roberta-base").