Switch to DeepSeek Reasoner for Gold-Medal Level Coding and Math Problems
Toggle between chat and reasoner models for complex logic tasks.
Use the deepseek-reasoner model (Thinking Mode) specifically for math, coding, and complex logic, while keeping deepseek-chat for standard conversational tasks.
The Scenario
You are facing a complex algorithmic challenge or a math-heavy data analysis task that standard LLMs struggle to solve accurately.
Before & after
A developer might spend 45–60 minutes manually debugging complex logical errors or researching obscure international coding competition-level math problems.
Switch to the `deepseek-reasoner` endpoint to engage the Thinking Mode, which uses extended compute to solve the problem in 1–2 minutes.
The Prompt
[SYSTEM: Perform high-reasoning analysis] I am encountering this specific logic error in my code: [PASTE_CODE_OR_PROBLEM]. Walk through the logic step-by-step and provide a fix.
The V3.2 internal 'DeepThink' mode is specifically architected for tasks that require high reasoning efficiency, such as advanced coding or multi-step logic. The non-thinking mode (deepseek-chat) is better suited for standard writing or chat tasks.
Source
Change Log | DeepSeek API Docs"deepseek-reasoner corresponds to DeepSeek-V3.2's thinking mode... optimized for long-context scenarios."