DeepSeek
Liang Wenfeng
Data verified as of Jul 17, 2026
Summary
DeepSeek is a Hangzhou-based AI lab, founded in July 2023 by hedge-fund billionaire Liang Wenfeng as a spin-off of his quant fund High-Flyer, that builds frontier open-weight language models at radically low cost. Its January 2025 R1 reasoning model — released under an MIT license and trained for a small fraction of US-lab budgets — briefly made its free chatbot the top US iOS app and triggered a historic market rout in which Nvidia shed roughly $600B in a day. As of mid-2026 its flagship is the DeepSeek-V4 family (V4-Pro at 1.6T total parameters and V4-Flash), open-weight models with 1M-token context reportedly trained on Huawei Ascend chips without Nvidia GPUs. DeepSeek serves ~130M monthly active users, dominates China's chatbot market, and monetizes through an API priced orders of magnitude below US frontier labs. After operating for three years on High-Flyer's money alone, it closed a record ~$7B maiden round at a ~$52B valuation in June 2026 — with most investors taking non-voting stakes that preserve Liang's control — and is preparing a mainland IPO targeted for 2027.
Main Products
DeepSeek's flagship open-weight models: V4-Pro (1.6T total / 49B active parameters) and V4-Flash (284B / 13B active), both MIT-licensed with 1M-token context and hybrid thinking/non-thinking modes — reportedly trained on Huawei Ascend chips without Nvidia GPUs.
Released in preview on April 24, 2026 with weights on Hugging Face; the official V4 release was announced for mid-July 2026 alongside DeepSeek's first peak/off-peak API pricing, with legacy deepseek-chat and deepseek-reasoner endpoints retiring July 24, 2026.
Free consumer assistant across iOS, Android and web, running the V4 family with Expert and Instant modes. Briefly the #1 free app on the US iOS App Store after R1's January 2025 launch and still one of the world's top AI chat platforms.
~130M global monthly active users and ~173M cumulative downloads (estimates); dominant in China with ~89% chatbot market share per Microsoft estimates.
Developer platform exposing the V4 family through OpenAI- and Anthropic-compatible endpoints at aggressive prices (V4-Flash from $0.14/$0.28 per million input/output tokens), with cache-hit input discounts and, from the official V4 release, peak/off-peak pricing.
V4-Flash and V4-Pro preview endpoints are live; legacy deepseek-chat and deepseek-reasoner models retire July 24, 2026.
What's Next
Operations & Revenue
DeepSeek runs one of the world's most used AI chatbots (~130M MAU) and the leading open-weight model family, with a deliberately tiny (~160-person) team. Freshly capitalized by a record ~$7B June 2026 round, it is building its own data centers on domestic Huawei Ascend compute for AI-agent workloads and preparing a mainland China IPO filing for a potential 2027 listing.
Revenue Streams
Usage-based, per-token access to the V4 family via OpenAI- and Anthropic-compatible endpoints, priced orders of magnitude below US frontier labs; peak/off-peak pricing arrives with the official V4 release.
Key Metrics
Timeline
In February 2026 Anthropic publicly accuses DeepSeek — along with Moonshot AI and MiniMax — of harvesting Claude outputs for model distillation through roughly 24,000 fraudulent accounts and 16M+ exchanges, sharpening the US–China AI dispute; DeepSeek is also barred from US defense and intelligence systems under the FY2026 NDAA.
On April 24, 2026 DeepSeek releases previews of V4-Pro (1.6T total / 49B active parameters) and V4-Flash (284B / 13B active) — MIT-licensed open-weight models with 1M-token context, reportedly trained on Huawei Ascend chips with no Nvidia GPUs, a landmark for China's domestic-compute push.
In June 2026 DeepSeek closes its first-ever external round — roughly ¥51B (~$7B), the largest single AI funding round in China's history — at a ~$52B post-money valuation, with Tencent, CATL, JD.com, NetEase and a state AI fund participating, mostly via non-voting stakes that keep Liang Wenfeng in control.
On January 20, 2025 DeepSeek releases the MIT-licensed R1 reasoning model. Within a week its free app tops the US iOS App Store and, on January 27, Nvidia falls ~18% — erasing roughly $600B, the largest single-company one-day market-value loss in US history — in what is dubbed AI's 'Sputnik moment.'