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DeepSeek

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Frontier reasoning, open weights, unbeatable price

Visit DeepSeek 4.5 · 41 reviewsFree

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DeepSeek

What it is

DeepSeek shook the AI world by matching frontier reasoning performance with radically cheaper training and inference — then open-sourcing the weights. Its free chat app topped global app stores, its API undercuts every major lab, and R1's visible reasoning chains influenced the whole industry. Privacy-conscious users can even run distilled models locally.

Key features

  • R1 reasoning with visible chains
  • Free unlimited chat
  • Open-source model weights
  • Ultra-cheap API

What we liked

  • + Frontier quality, free
  • + Open weights option
  • + Disruptive API pricing

Worth noting

  • · China data-residency concerns
  • · Feature set thinner than ChatGPT

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