| Jerzyk — Polish decision model and jerzyk-bench |
| Copyright 2026 Fundacja Trenify |
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| Licensed under the Apache License, Version 2.0 (see LICENSE). |
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| This project builds on the following third-party work: |
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| - Laya multilingual (convaiinnovations/laya-multilingual) and the `laya` Python package — base model and |
| fine-tuning tool for Jerzyk. Apache License 2.0. https: |
| - mmBERT-base (jhu-clsp/mmBERT-base) — multilingual encoder inside Laya multilingual. MIT License. |
| - Bielik 11B v3.0 Instruct (speakleash/Bielik-11B-v3.0-Instruct), SpeakLeash & ACK Cyfronet AGH — wrote the |
| generated court / administrative / accounting test documents and filtered the training data. Apache License 2.0. |
| - Qwen3 8B (Qwen/Qwen3-8B), Alibaba Cloud — wrote the generated training documents. Apache License 2.0. |
| - llama.cpp — local inference of Bielik and Qwen during data preparation. MIT License. |
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| Data sources: |
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| - SAOS — System Analizy Orzeczeń Sądowych (https: |
| rulings. Court rulings are official documents and are not subject to copyright (art. 4 of the Polish |
| Copyright Act). |
| - samorzad.gov.pl — public notices of Polish municipal, county and state offices. Official documents |
| (art. 4 of the Polish Copyright Act) |
| before publication. |
| - The customer e-mails in the jerzyk-bench test and dev splits were written with Claude (Anthropic) for |
| evaluation only. They were not used to train Jerzyk |
| calibration temperatures (one number per question type). |
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| Jerzyk is an independent project and is not affiliated with TypeSafe, Convai Innovations, SpeakLeash, Alibaba, |
| Anthropic or SAOS. |
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