DeepSeek

Also known as: 深度求索

DeepSeek is a Chinese AI company headquartered in Hangzhou, Zhejiang, China (derived from the official footer company name 杭州深度求索人工智能基础技术研究有限公司 and Zhejiang ICP / Hangzhou public-security filings, known for the deepseek-v4-1-flash, deepseek-v4-pro models.

Last verified: 2026-09-20 · Data status: Current · Next review: 2026-10-20

Key facts for DeepSeek
Key fact	Value
Founded	Unknown
Headquarters	Hangzhou, Zhejiang, China (derived from the official footer company name 杭州深度求索人工智能基础技术研究有限公司 and Zhejiang ICP / Hangzhou public-security filings; the official pages fetched do not print a headquarters line verbatim)
Funding	No external funding officially disclosed as of 2026-09-22 (media-reported rounds are not confirmed on official channels).
Official website	https://www.deepseek.com/
Documentation	https://api-docs.deepseek.com/
AI products	DeepSeek Chat (web and mobile assistant), DeepSeek API platform, DeepSeek Harness (developer preview)

Major releases

Major releases by DeepSeek
Release	Date	Type
DeepSeek-V4.1-Flash	2026-09-10	model_release
DeepSeek-V4-Pro GA (0813)	2026-08-13	model_release
DeepSeek-V4 Preview	2026-04-24	model_release
DeepSeek-V3.2	2025-12-01	model_release

Open-source projects

DeepSeek-V4.1-Flash (MIT)
DeepSeek-V4-Pro (MIT)
DeepSeek-V4-Flash (MIT)
DeepSeek-V3.2 (MIT)
DeepSeek-R1 (MIT)
DeepSeek-OCR / DeepSeek-OCR-2
DeepEP
FlashMLA
DeepGEMM
3FS

DeepSeek is a Chinese AI company (杭州深度求索人工智能基础技术研究有限公司) known for open-weight models and low-cost APIs. Its current API lineup is the DeepSeek-V4.1 family: deepseek-flash (DeepSeek-V4.1-Flash, released 2026-09-10, multimodal, MIT open weights) and deepseek-v4-pro (DeepSeek-V4-Pro-0813), both with 1M-token context windows and 384K maximum output.

The API platform (platform.deepseek.com) offers OpenAI-compatible, Responses and Anthropic-compatible endpoints with automatic KV caching and peak/off-peak pricing in USD. The founding date is not stated on the official pages fetched.

Models

Sources

[Official] DeepSeek API docs — Models & Pricing [Official] DeepSeek API Change Log [Official] DeepSeek official site (EN) [Official] DeepSeek Transparency Center

Data interpretation

Evidence types for DeepSeek
Field	Value	Evidence type
Headquarters	Hangzhou, Zhejiang, China (derived from the official footer company name 杭州深度求索人工智能基础技术研究有限公司 and Zhejiang ICP / Hangzhou public-security filings	Official
Foundation models	deepseek-v4-1-flash, deepseek-v4-pro	Official
Major releases	4 entries	Official
Entity relations	2 models, 0 agents, 0 APIs	China AI Hub analysis

Evidence types: Official = vendor documentation or official pages. China AI Hub analysis = derived from the database itself. See the sourcing policy.

Where is DeepSeek based?

Hangzhou, Zhejiang, China (derived from the official footer company name 杭州深度求索人工智能基础技术研究有限公司 and Zhejiang ICP / Hangzhou public-security filings; the official pages fetched do not print a headquarters line verbatim).

Which foundation models does DeepSeek offer?

deepseek-v4-1-flash, deepseek-v4-pro.

Does DeepSeek provide an API?

No API is currently listed for DeepSeek in our database.

What open-source projects does DeepSeek maintain?

DeepSeek-V4.1-Flash (MIT), DeepSeek-V4-Pro (MIT), DeepSeek-V4-Flash (MIT), DeepSeek-V3.2 (MIT), DeepSeek-R1 (MIT), DeepSeek-OCR / DeepSeek-OCR-2, DeepEP, FlashMLA, DeepGEMM, 3FS.

Where does China AI Hub get its DeepSeek data?

From 4 sources, last verified 2026-09-20.