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DeepSeek

DeepSeek

Open source

An open-weight AI assistant from DeepSeek, whose R1 reasoning model (2025) matches frontier performance at a fraction of the cost and is fully released on GitHub.

Key Features

Open-weight R1 reasoning model
Low-cost API
Strong coding & math

Tags

ChatReasoningOpen source
Visit websiteView source

Basic Info

Pricing
Free
Rating
4.7 (9,200 reviews)
Platforms
WebiOSAndroidAPI
Founded
2023
Headquarters
Hangzhou, China