> ## Documentation Index
> Fetch the complete documentation index at: https://wiki.platelunchcollective.com/llms.txt
> Use this file to discover all available pages before exploring further.

# DeepSeek

> DeepSeek is a Chinese AI company that has developed a series of large language models — most notably DeepSeek-R1 — that have achieved performance comparable ...

*Platform* · *AI Search Infrastructure*

## Definition

DeepSeek is a Chinese AI company that has developed a series of large language models — most notably DeepSeek-R1 — that have achieved performance comparable to leading US models at significantly lower reported training costs. Its models are open-source and have been widely adopted in research and commercial applications.

## Why It Matters for AI Search

DeepSeek's rapid emergence and open-source distribution have expanded the AI search ecosystem beyond the handful of US-based platforms that previously defined it. As DeepSeek models are integrated into consumer and enterprise products, they represent an additional retrieval surface for brands to consider. DeepSeek's training data composition and citation behavior differ from OpenAI, Anthropic, and Google models — requiring brands to understand that AI search optimization is not a one-platform problem.

## Related Terms

<CardGroup cols={2}>
  <Card title="AI Search Ecosystem" href="/ai-search-glossary/ai-search-ecosystem" />

  <Card title="LLM visibility" href="/ai-search-glossary/llm-visibility" />

  <Card title="Training corpus" href="/ai-search-glossary/training-corpus" />

  <Card title="Foundation model" href="/ai-search-glossary/foundation-model" />

  <Card title="LLMO" href="/ai-search-glossary/llmo" />
</CardGroup>

## Relevant Plate Lunch Collective Services

[AI SEO](https://www.platelunchcollective.com/services/ai-seo)  [AI Search Visibility Assessment](https://www.platelunchcollective.com/services/context-map)