# Open-ended QA medical datasets that have a permissive license

14 of the 20 Open-ended QA medical datasets in the Mdexa database have a permissive license: Chinese-medical-dialogue-data（Toyhom）, CMB (Chinese Medical Benchmark), Huatuo-26M, huatuo_encyclopedia_qa, Huatuo_knowledge_graph_qa, Huatuo26M-Lite, huatuo26M-testdatasets, HuatuoGPT2-Pretraining-Instruction, HuatuoGPT2-SFT-GPT4-140K, LingLanMedBench Traditional Chinese Medicine Benchmark Dataset, medical-o1-reasoning-SFT（中文子集）, Medical-Reasoning-SFT-Mega, GBaker/MedQA-USMLE-4-options-hf, MedQA-USMLE-4-options. 13 of them carry a source risk flag; a license verdict does not cover source risks.

- [Chinese-medical-dialogue-data（Toyhom）](https://mdexa.com/datasets/chinese-medical-dialogue-data/) — Permissive · Link only · unknown-provenance · 2026-11-12
- [CMB (Chinese Medical Benchmark)](https://mdexa.com/datasets/cmb/) — Permissive · Link only · exam-derived · 2026-11-12
- [Huatuo-26M](https://mdexa.com/datasets/huatuo-26m/) — Permissive · Link only · scraped, real-patient-text · 2026-11-12
- [huatuo_encyclopedia_qa](https://mdexa.com/datasets/huatuo-encyclopedia-qa/) — Permissive · Link only · scraped · 2026-11-12
- [Huatuo_knowledge_graph_qa](https://mdexa.com/datasets/huatuo-knowledge-graph-qa/) — Permissive · Link only · 2026-11-14
- [Huatuo26M-Lite](https://mdexa.com/datasets/huatuo26m-lite/) — Permissive · Link only · scraped, model-generated, derived · 2026-11-12
- [huatuo26M-testdatasets](https://mdexa.com/datasets/huatuo26m-testdatasets/) — Permissive · Link only · derived, real-patient-text · 2026-11-14
- [HuatuoGPT2-Pretraining-Instruction](https://mdexa.com/datasets/huatuogpt2-pretraining-instruction/) — Permissive · Link only · model-generated · 2026-11-14
- [HuatuoGPT2-SFT-GPT4-140K](https://mdexa.com/datasets/huatuogpt2-sft-gpt4-140k/) — Permissive · Link only · derived, model-generated · 2026-11-14
- [LingLanMedBench Traditional Chinese Medicine Benchmark Dataset](https://mdexa.com/datasets/linglan/) — Permissive · Link only · exam-derived · 2026-11-14
- [medical-o1-reasoning-SFT（中文子集）](https://mdexa.com/datasets/medical-o1-reasoning-sft/) — Permissive · Link only · model-generated · 2026-11-12
- [Medical-Reasoning-SFT-Mega](https://mdexa.com/datasets/medical-reasoning-sft-mega/) — Permissive · Link only · model-generated · 2026-11-14
- [GBaker/MedQA-USMLE-4-options-hf](https://mdexa.com/datasets/medqa-usmle-4-options-hf/) — Permissive · Link only · exam-derived · 2026-11-14
- [MedQA-USMLE-4-options](https://mdexa.com/datasets/medqa-usmle-4-options/) — Permissive · Link only · exam-derived · 2026-11-14

These are what the sources state; confirm the terms at the source before use.

Entries verified 2026-11-12 to 2026-11-14.