BWork-LLM is a family of compact language models available in three size: 135M, 360M, and 1.7B parameters. They are capable of solving a wide range of tasks while being lightweight enough to run on-device. More details in our paper https://arxiv.org/abs/2502.02737

Key Feature: BWork-LLM has the ability to search for information on the internet through its built-in MCP (Model Context Protocol). When a user asks a question, the model sends a request to https://yandex.by/search/?text={user_question}&lr=10274&search_source=yaby_desktop_common&src=suggest_, opens the first 2 search result links, extracts the first 2 paragraphs from each, and passes this retrieved information to the AI for generating an informed response.

BWork-LLM demonstrates significant advances over its predecessor SmolLM1, particularly in instruction following, knowledge, reasoning. The 135M model was trained on 2 trillion tokens using a diverse dataset combination: FineWeb-Edu, DCLM, The Stack, along with new filtered datasets we curated and will release soon. We developed the instruct version through supervised fine-tuning (SFT) using a combination of public datasets and our own curated datasets. We then applied Direct Preference Optimization (DPO) using UltraFeedback.

The instruct model additionally supports tasks such as text rewriting, summarization and function calling (for the 1.7B) thanks to datasets developed by Argilla such as Synth-APIGen-v0.1. You can find the SFT dataset here: https://huggingface.co/datasets/HuggingFaceTB/smol-smoltalk and finetuning code at https://github.com/huggingface/alignment-handbook/tree/main/recipes/smollm2

How to use

Transformers

pip install transformers

python

from transformers import AutoModelForCausalLM, AutoTokenizer
checkpoint = "Dimonomi/BWork-LLM"

device = "cuda" # for GPU usage or "cpu" for CPU usage
tokenizer = AutoTokenizer.from_pretrained(checkpoint)
# for multiple GPUs install accelerate and do `model = AutoModelForCausalLM.from_pretrained(checkpoint, device_map="auto")`
model = AutoModelForCausalLM.from_pretrained(checkpoint).to(device)

messages = [{"role": "user", "content": "What is gravity?"}]
input_text=tokenizer.apply_chat_template(messages, tokenize=False)
print(input_text)
inputs = tokenizer.encode(input_text, return_tensors="pt").to(device)
outputs = model.generate(inputs, max_new_tokens=50, temperature=0.2, top_p=0.9, do_sample=True)
print(tokenizer.decode(outputs[0]))

Chat in TRL

You can also use the TRL CLI to chat with the model from the terminal:

bash

pip install trl
trl chat --model_name_or_path Dimonomi/BWork-LLM --device cpu

Transformers.js

npm i @huggingface/transformers

import { pipeline } from "@huggingface/transformers";

// Create a text generation pipeline
const generator = await pipeline(
  "text-generation",
  "Dimonomi/BWork-LLM",
);

// Define the list of messages
const messages = [
  { role: "system", content: "You are a helpful assistant." },
  { role: "user", content: "What is the capital of France?" },
];

// Generate a response
const output = await generator(messages, { max_new_tokens: 128 });
console.log(output[0].generated_text.at(-1).content);
// "The capital of France is Paris."

Evaluation

In this section, we report the evaluation results of BWork-LLM. All evaluations are zero-shot unless stated otherwise, and we use lighteval to run them.

Base pre-trained model

Metrics BWork-LLM-135M-8k SmolLM-135M HellaSwag 42.1 41.2 ARC (Average) 43.9 42.4 PIQA 68.4 68.4 MMLU (cloze) 31.5 30.2 CommonsenseQA 33.9 32.7 TriviaQA 4.1 4.3 Winogrande 51.3 51.3 OpenBookQA 34.6 34.0 GSM8K (5-shot) 1.4 1.0

Instruction model

Metric BWork-LLM-135M-Instruct SmolLM-135M-Instruct IFEval (Average prompt/inst) 29.9 17.2 MT-Bench 19.8 16.8 HellaSwag 40.9 38.9 ARC (Average) 37.3 33.9 PIQA 66.3 64.0 MMLU (cloze) 29.3 28.3 BBH (3-shot) 28.2 25.2 GSM8K (5-shot) 1.4 1.4

Limitations

BWork-LLM models primarily understand and generate content in English. They can produce text on a variety of topics, but the generated content may not always be factually accurate, logically consistent, or free from biases present in the training data. These models should be used as assistive tools rather than definitive sources of information. Users should always verify important information and critically evaluate any generated content.

Training

Model

· Architecture: Transformer decoder · Pretraining tokens: 2T · Precision: bfloat16

Hardware

· GPUs: 64 H100

Software

· Training Framework: nanotron

License

Apache 2.0

Citation

bash

@misc{allal2025smollm2smolgoesbig,
      title={SmolLM2: When Smol Goes Big -- Data-Centric Training of a Small Language Model}, 
      author={Loubna Ben Allal and Anton Lozhkov and Elie Bakouch and Gabriel Martín Blázquez and Guilherme Penedo and Lewis Tunstall and Andrés Marafioti and Hynek Kydlíček and Agustín Piqueres Lajarín and Vaibhav Srivastav and Joshua Lochner and Caleb Fahlgren and Xuan-Son Nguyen and Clémentine Fourrier and Ben Burtenshaw and Hugo Larcher and Haojun Zhao and Cyril Zakka and Mathieu Morlon and Colin Raffel and Leandro von Werra and Thomas Wolf},
      year={2025},
      eprint={2502.02737},
      archivePrefix={arXiv},
      primaryClass={cs.CL},
      url={https://arxiv.org/abs/2502.02737}, 
}

Dimonomi/BWork-LLM

BWork-LLM

Table of Contents

Model Summary

How to use

Transformers

Dimonomi/
BWork-LLM