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DeepSeek R1

DeepSeek R1: Reasoning AI

An open-source reasoning model that thinks step by step. Excels at math, logic, coding challenges, and complex analytical tasks.

What is DeepSeek R1?

DeepSeek R1 is a specialized reasoning model that uses chain-of-thought processing to solve complex problems. It "thinks" through problems step by step, showing its 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 an open-source model, it brings advanced reasoning to everyone.

What DeepSeek R1 can do

Chain-of-Thought Reasoning
Think through problems step by step with visible reasoning chains for full transparency.
Mathematical Problem Solving
Solve advanced math problems including competition-level questions with detailed solutions.
Logical Analysis
Break down complex arguments, puzzles, and logic problems with rigorous deduction.
Coding Challenges
Solve algorithmic problems and competitive programming challenges with reasoned approaches.
Scientific Reasoning
Analyze scientific problems with structured, evidence-based reasoning across disciplines.
Open & Transparent
Fully open-source reasoning model with visible thought processes and public weights.

How to use DeepSeek R1

Open the chat
Click "Open Chat" to access DeepSeek R1 for free.
Pose a hard problem
Give R1 challenging math, logic, or coding problems - that's where it shines.
Watch it reason
R1 shows its chain-of-thought process as it works through the problem.
Verify the logic
Review the reasoning steps and ask for clarification on any part.
Use the solution
Copy the final answer and reasoning for your work or studies.

Frequently Asked Questions

Yes, DeepSeek R1 is completely free on chatgpt.org.

Chain-of-thought means the model reasons step by step through a problem, showing its thinking process before giving a final answer.

R1 specializes in reasoning and complex problem-solving, while V3 is better for general conversation and coding tasks.

Excellent. R1 achieves top scores on math benchmarks and can solve competition-level problems.

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.