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DeepSeek develops AI language and reasoning models. Coverage follows its research, open model releases and their implications for the AI industry.
Reviewed 19 October 2026. Dates retain the precision of the source; retrospective disclosures are identified in the event. No verified public ARR or recognized-revenue series was established in this review. Model-training cost is not company revenue.
Revenue, funding, product launches and major company events, newest first. Expand the earlier milestones for more history.
DeepSeek adds developer access to its search engine, alongside a V4.1 Flash update.
Source: DeepSeekThe new architecture adds native visual understanding and updates the commercial API model lineup.
Source: DeepSeekEarlier revenue, financing and company milestones.
The release reaches app, web and API, adding native Responses API support.
Source: DeepSeekThe API model advances agent capabilities ahead of V4 Pro’s general release.
Source: DeepSeekV4 Pro and Flash enter the API; legacy model names begin a migration period.
Source: DeepSeekThinking and non-thinking API modes move to a shared upgraded model generation.
Source: DeepSeekR1 and distilled models expand open-weight reasoning access under MIT licensing.
Source: DeepSeekThe model upgrades the commercial chat API and establishes the base for subsequent reasoning releases.
Source: DeepSeekThe Hangzhou-based research company begins developing language models, preceding its V3 and R1 releases.
Source: DeepSeek company profileBriefs, articles and relevant sections, newest first. Explore older coverage below.
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