Bielik7B v0.1: Polish language model – development, insights, and evaluation

Abstract

We introduce Bielik 7B v0.1 – a seven-billion-parameter generative text model for Polish language processing. Trained on curated Polish corpora, this model addresses key challenges in language model development through innovative techniques; these include Weighted Instruction Cross-Entropy Loss (which balances the learning of different instruction types) and Adaptive Learning Rate (which dynamically adjusts the learning rate based on training progress). To evaluate performance, we created the Open PL LLM Leaderboard and Polish MT-Bench – novel frameworks assessing various NLP tasks and conversational abilities. Bielik 7B v0.1 demonstrates significant improvements, achieving a ninepercentage- point increase in its average score compared to Mistral-7B-v0.1 on the RAG Reader task. It also excels in the Polish MT-Bench – particularly in the Reasoning (6.15/10) and Role-playing (7.83/10) categories. This model represents a substantial advancement in Polish language AI, offering a powerful tool for diverse linguistic applications and setting new benchmarks in the field.