AI research company
DeepSeek
DeepSeek is a Chinese AI company based in Hangzhou that releases large language models with open weights, usually under the MIT license, and sells API access to them. Its 2026 releases include the DeepSeek-V4 family, DeepSeek-V4.1-Flash in September and the DeepSeek-V4.1-Flash-1017 update on 17 October 2026.
Last reviewed 28 Oct 2026
Facts at a glance
| Type | AI research company and API provider |
|---|---|
| Headquarters | Hangzhou, China |
| Founded | 2023 |
| Model license | MIT for repository and weights of DeepSeek-V4.1-Flash-1017 source |
| API models | deepseek-flash (DeepSeek-V4.1-Flash-1017) and deepseek-v4-pro (DeepSeek-V4-Pro-0813), 1M context source |
| Recent releases | V4-Pro GA 13 Aug 2026, V4.1-Flash 10 Sep 2026, V4.1-Flash-1017 17 Oct 2026 source |
Questions people ask
- Are DeepSeek models open source?
- DeepSeek publishes model weights on Hugging Face and ModelScope. The DeepSeek-V4.1-Flash-1017 model card states that the repository and weights are licensed under MIT.
- Which DeepSeek models are in the API?
- The pricing page lists deepseek-flash, served by DeepSeek-V4.1-Flash-1017, and deepseek-v4-pro, served by DeepSeek-V4-Pro-0813.