Toggle 'DeepThink' Mode for Complex Logic and Mathematical Problem Solving
Switch to the Reasoner mode for high-stakes logic and complex math.
Use the 'deepseek-reasoner' model instead of 'deepseek-chat' when you need the AI to show its work and handle multi-step logical deductions.
The Scenario
You are faced with a high-stakes logic puzzle, a complex mathematical proof, or a multi-layered business strategy problem that requires more than a surface-level response.
Before & after
You would manually break the problem into parts, research each step, and verify logic, which often takes 30–60 minutes for complex math or logic.
Input your complex problem into the Reasoner model. It will generate a transparent reasoning chain before giving the final answer, taking about 1–2 minutes for deep analysis.
The Prompt
Analyze the following complex logical problem using your deep reasoning mode. Show your step-by-step thinking process before providing the final conclusion: [INSERT_COMPLEX_PROBLEM]
DeepSeek-V3.2 uses a hybrid architecture where the 'reasoner' endpoint is specifically tuned for deep thinking. This is ideal for International Mathematical Olympiad (IMO) level problems or complex architectural planning.
Source
Change Log | DeepSeek API Docs"deepseek-reasoner corresponds to DeepSeek-V3.2's thinking mode... tuned for deep reasoning rather than casual chat."