# Sources — ChatGPT

- [How your data is used to improve model performance](https://help.openai.com/en/articles/5722486-how-your-data-is-used-to-improve-model-performance) — official_docs, OpenAI (primary), checked 2026-04-18
- [OpenAI Terms of Use](https://openai.com/policies/terms-of-use) — official_terms, OpenAI (primary), checked 2026-04-18

Canonical HTML: https://atlas.lb-product.com/ja/sources/chatgpt