PLLuM is a family of large language models (LLMs) specialized in Polish and other Slavic/Baltic languages, with additional English data incorporated for broader generalization. Developed through an extensive collaboration with various data providers, PLLuM models are built on high-quality text corpora and refined through instruction tuning, preference learning, and advanced alignment techniques. These models are intended to generate contextually coherent text, offer assistance in various tasks (e.g., question answering, summarization), and serve as a foundation for specialized applications such as domain-specific intelligent assistants.
In 2024, PLLuM models were developed by the PLLuM consortium. Since 2025, their development has continued under HIVE AI, a broader alliance of research institutions and organizations delivering digital public services, focused on open language technologies for Polish public administration.
Key Highlights
Extensive Data Collection
We gathered large-scale, high-quality text data in Polish (around 150B tokens after cleaning and deduplication) and additional text in Slavic, Baltic, and English languages. Part of these tokens (28B) can be used in fully open-source models, including for commercial use (in compliance with relevant legal regulations).
Organic Instruction Dataset
We curated the largest Polish collection of manually created “organic instructions” (~55k prompt-response pairs, including ~5.5k multi-turn dialogs). This human-authored instruction set is based on an extensive typology of human-model interactions and it covers a range of subtle aspects of supervised fine-tuning (SFT) that might be overlooked with automated approaches (including large scale distillation of 'strong LLMs'). It was also designed to mitigate negative linguistic transfer from non-Polish textual data used in the pre-training phase.
Polish Preference Corpus
We created the first Polish-language preference corpus, featuring prompts and multiple model responses manually assessed by a demographically diverse team of annotators. This dataset teaches the model not only correctness (factual and linguistic) but also balance and safety—especially for potentially controversial or adversarial topics.
Evaluation Benchmarks
We developed custom benchmarks to evaluate our models on tasks relevant to Polish public administration, where PLLuM achieved top scores among all tested models. In broader Polish-language tasks, PLLuM models also attain state-of-the-art results.
Model Description
Note: this model was formerly denoted as Llama-PLLuM-70B-chat-250801, we have updated the name to make it conform to the naming convention of PLLuM models.
Below is a summary of the Llama-PLLuM-70B-instruct-2508 and Llama-PLLuM-70B-chat-2508. All model names link to their respective Hugging Face resources, while the base models and licenses link to the relevant source models or license references. The model with the -chat suffix has been aligned to human preferences and is generally safer and more efficient for use in dialogue and general-purpose scenarios.
Pretraining: All models were pretrained or continued-pretrained on large-scale Polish corpora (up to 150B tokens) plus a range of English texts. The training data reflects sources available up to autumn 2024 and does not include more recent content.
Instruction Fine-Tuning: We fine-tuned the models using approximately 55k manually curated Polish "organic instructions," 30k programmatically derived instructions from high-quality Polish corpora, and 55k (including 10k RAG examples) synthetic , context-aware instructions generated by high-performing, permissively licensed LLMs such as Mixtral8x22 and Deepseek V3.
Alignment and Preference Learning: Manually annotated preference data taught the models to produce safer, balanced, and contextually appropriate responses, even in adversarial or sensitive cases. The dataset included 40,194 training and 8,168 evaluation preference pairs, labeled across seven criteria: truthfulness, linguistic correctness, safety, fairness, conciseness, coherence & reasoning, and helpfulness & instruction-following.
Intended Use Cases
General Language Tasks: Text generation, summarization, question answering, etc.
Domain-Specific Assistants: Especially effective for Polish public administration and legal or bureaucratic topics where domain-aware retrieval is required.
Research & Development: Building blocks for downstream AI applications in academic or industrial settings, where a strong command of the Polish language is essential.
How to Use
Each PLLuM model can be loaded via the Hugging Face Transformers library (or compatible frameworks). For RAG-based scenarios, pair the model with a relevant vector store or document retrieval system.
Below are some recommended steps and code snippets:
1. Installation
Make sure you have the latest versions of transformers and torch (or another compatible deep learning framework) installed:
pip install transformers accelerate torch
2. Loading the Model
Use the following example to load one of the PLLuM models:
python
1from transformers import AutoTokenizer, AutoModelForCausalLM
23model_name ="CYFRAGOVPL/Llama-PLLuM-70B-chat-2508"# Replace with the PLLuM model name of your choice4tokenizer = AutoTokenizer.from_pretrained(model_name)5model = AutoModelForCausalLM.from_pretrained(model_name)
3. Using bfloat16 (BF16)
If your hardware (e.g., newer GPUs) supports bfloat16, you can reduce memory usage and potentially speed up inference:
python
1import torch
2from transformers import AutoTokenizer, AutoModelForCausalLM
34model_name ="CYFRAGOVPL/Llama-PLLuM-70B-chat-2508"5tokenizer = AutoTokenizer.from_pretrained(model_name)67# Load model in bfloat16 precision8model = AutoModelForCausalLM.from_pretrained(9 model_name,10 torch_dtype=torch.bfloat16,11 device_map="auto"# automatically places model layers on available devices12)
4. Generating an Example Text
python
12prompt ="Napisz krótki wiersz o wiośnie."# EN:"Write a short poem about spring."3inputs = tokenizer(prompt, return_tensors="pt").to(model.device)45outputs = model.generate(6**inputs,7 max_new_tokens=50,8 do_sample=True,9 top_k=50,10 top_p=0.9,11 temperature=0.312)1314generated_text = tokenizer.decode(outputs[0], skip_special_tokens=True)15print(generated_text)
5. Expected Output
Below is a sample (hypothetical) output for the prompt above:
css
1Przykładowy wiersz o tematyce wiosennej:23Wiosna, wiosna, wiosna, ach to ty!
4Kwiecień plecień wciąż przeplata,5trochę zimy, trochę lata.
6A ja nie mogę się już doczekać,7kiedy w kalendarzu ujrzę maj.
8Wtedy wszystko wkoło rozkwita,9a ptaki tak pięknie śpiewają.
10Wiosno, wiosno, czekam z utęsknieniem,11zrób mi tę przyjemność i przyjdź wreszcie, proszę!
Your results may vary depending on model parameters (e.g., temperature, top_k, top_p), hardware, and other settings.
6. Retrieval Augmented Generation (RAG)
Llama-PLLuM-70B-instruct-250801 and Llama-PLLuM-70B-chat-2508 were additionally trained to perform well in Retrieval Augmented Generation (RAG) setting. The prompt is in .jinja format, where docs is a list of document texts and question is a query that should be answered based on the provided documents. If there is no answer in the provided documents model generates "Nie udało mi się odnaleźć odpowiedzi na pytanie".
Prompt:
Numerowana lista dokumentów jest poniżej:
---------------------
<results>{% for doc in docs %}
Dokument: {{ loop.index0 }}
{{ doc }}
{% endfor %}</results>
---------------------
Odpowiedz na pytanie użytkownika wykorzystując tylko informacje znajdujące się w dokumentach, a nie wcześniejszą wiedzę.
Udziel wysokiej jakości, poprawnej gramatycznie odpowiedzi w języku polskim. Odpowiedź powinna zawierać cytowania do dokumentów, z których pochodzą informacje. Zacytuj dokument za pomocą symbolu [nr_dokumentu] powołując się na fragment np. [0] dla fragmentu z dokumentu 0. Jeżeli w dokumentach nie ma informacji potrzebnych do odpowiedzi na pytanie, zamiast odpowiedzi zwróć tekst: "Nie udało mi się odnaleźć odpowiedzi na pytanie".
Pytanie: {{ question }}
Training Procedure
Datasets: ~150B tokens from Polish and multilingual sources, with ~28B tokens available for fully open-source commercial use.
Hyperparameters: Vary based on model size, typically including Adam or AdamW optimizers, a range of batch sizes, and carefully tuned learning rates.
Hardware & Duration: Training using Bem2 (up to 300xH100 GPUs) and Helios HPCs. The training time for each PLLuM model depends on its parameter size and hardware configuration, ranging from approximately 8 to 25 days on a multi-GPU cluster for models between 8B and 70B.
Evaluation and Benchmarks
Public Administration: PLLuM models demonstrated top-tier performance in specialized tasks relevant to government services.
Polish Language Tasks: Across a variety of internal benchmarks and standard corpora, PLLuM consistently outperforms other models in accuracy, coherence, and safety metrics.
Custom Tests: A unique preference corpus and alignment tests ensure robust, safe, and contextually accurate responses.
Limitations and Bias
Potential Hallucinations: Like other LLMs, PLLuM may occasionally produce factually incorrect or fabricated content.
Sensitivity & Bias: While extensive preference learning has been done, biases might still emerge, especially in controversial or subjective topics.
Context Length: Very long context tasks may challenge certain models, depending on memory constraints.
Ethical Considerations
PLLuM models are designed for constructive and responsible usage. Users should exercise caution when deploying them in production scenarios, especially for sensitive or regulated domains. Despite efforts to minimize harmful outputs, there is always a risk of generating offensive, biased, or inappropriate text. Human oversight and due diligence are advised.
Citation
If you use PLLuM models or any part of this repository in your research or deployment, please cite as follows (BibTeX):
@unpublished{pllum2025,
title={PLLuM: A Family of Polish Large Language Models},
author={HIVE AI Consortium},
year={2025}
}
License
Model Llama-PLLuM-70B-chat-2508 is published under Llama 3.1 license.
Creators & Consortium
The Llama-PLLuM-70B-instruct-2508 and Llama-PLLuM-70B-chat-2508 models were trained under the banner of HIVE AI – a new initiative uniting scientific institutions and digital service providers working together to develop and implement open language technologies for the Polish public sector. HIVE AI continues the mission of the original PLLuM project, expanding it into a coordinated effort to build, improve, and deploy Polish language models in real-world administrative applications.
For questions or contributions, please reach out via: hive@nask.pl
We welcome feedback, collaboration, and further exploration of PLLuM models!
Acknowledgements
Project financed by the Minister of Digital Affairs under the targeted subsidy No. 1/WII/DBI/2025: “HIVE AI: Development and Pilot Implementation of LLMs in the Polish Public Administration”
Funding Amount: approx. 19 mln PLN Contract Signing Date: 2025-03-25
