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DeepSeek

Chinese open-source AI rivalling GPT-5 at a fraction of the cost.

What is DeepSeek?

DeepSeek's chat product. Strong reasoning, free for unlimited use, with API pricing 10-50x cheaper than GPT-5. Shook the AI industry in early 2025.

Key features

  • Free unlimited chat
  • Strong reasoning model
  • Code generation
  • API access at low cost
  • Open source weights

Pros

  • Completely free
  • Surprisingly capable
  • Open source weights available

Cons

  • Data routed through China
  • Less polished UI

Best for

Cost-conscious developersResearchersOpen-source advocates

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