An open-source reasoning AI that thinks step by step. Excels at math, logic, coding challenges, and complex analytical tasks. Free, no login.
DeepSeek R1 is a specialized reasoning AI model that uses chain-of-thought processing to solve complex problems. It "thinks" through problems step by step, showing its complete reasoning process before delivering a final answer.
R1 was trained using reinforcement learning to develop its reasoning capabilities, achieving performance comparable to OpenAI's o1 on math and coding benchmarks. As a fully open-source model, it brings advanced reasoning AI to everyone.
Yes — DeepSeek R1 is completely free on chat-gpt.org. No login needed.
Chain-of-thought means the AI reasons step by step through a problem, showing its complete thinking process before giving a final answer.
R1 specializes in reasoning and complex problem-solving, while V3 is better for general conversation and everyday coding tasks.
Excellent — R1 achieves top scores on math benchmarks and can solve competition-level problems with detailed step-by-step solutions.
Yes — R1 matches o1 on many reasoning benchmarks while being fully open source.
Yes — DeepSeek R1 is fully open source with publicly available weights and architecture.