# What is DeepSeek? Definition & Technical Mechanics

> **Source:** [SPIDITS AI AI Glossary](https://spidits.com/ai-glossary)  
> **Category:** Foundational AI  
> **Canonical Citation:** [https://spidits.com/ai-glossary/deepseek](https://spidits.com/ai-glossary/deepseek)

## Definition
DeepSeek is a prominent artificial intelligence research company specializing in developing high-performance open-source models, including reasoning, coder, and Mixture of Experts (MoE) architectures, which compete directly with leading proprietary systems.

## Architectural Mechanics & Deep Dive
DeepSeek is a prominent open-source AI research organization that develops state-of-the-art foundation and reasoning models. By implementing innovative Mixture of Experts (MoE) architectures, custom attention mechanisms, and reinforcement learning alignment algorithms (such as GRPO), DeepSeek produces open models that compete with proprietary systems at a fraction of the traditional training and hosting compute costs.

## Industry Applications & Real-World Use Cases
Code generation, reasoning-heavy logical tasks, and cost-efficient API deployment

## Frequently Asked Questions

### What is DeepSeek-R1?
An open-source reasoning model trained with reinforcement learning that uses reasoning chains (thinking tokens) to solve complex math and coding tasks.

### How does DeepSeek lower compute costs?
By developing highly optimized Mixture of Experts (MoE) routing and training frameworks like DeepSeekMoE.

## Related Terminology
- [mixture-of-experts](https://spidits.com/ai-glossary/mixture-of-experts)
- [grpo](https://spidits.com/ai-glossary/grpo)
- [reasoning-model](https://spidits.com/ai-glossary/reasoning-model)

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*From the SPIDITS AI Knowledge Base (300+ terms indexed). Explore full technical definitions: [https://spidits.com/ai-glossary](https://spidits.com/ai-glossary)*