Activate DeepSeek Thinking Mode for Hard Logic Problems
Use dedicated 'Thinking Mode' models for complex logic and reasoning tasks.
Switch your model endpoint to `deepseek-reasoner` when you need high-level logical reasoning rather than standard conversation.
The Scenario
You are dealing with a highly complex coding bug or a difficult strategic planning problem that requires deep logical deduction rather than just creative writing.
Before & after
Users would manually prompt a single model to 'think step-by-step' or 'act as a logic expert.' Refining logic this way could take 10–15 minutes across multiple iterations.
Users can toggle between standard chat and intense logic by changing the model ID to 'deepseek-reasoner'. This switch takes seconds and instantly improves logical outcomes.
The Prompt
I am working on [DESCRIBE_COMPLEX_PROBLEM]. Please use your Thinking Mode (deepseek-reasoner) to provide a step-by-step logical breakdown of the solution.
DeepSeek offers a specific 'thinking mode' through the `deepseek-reasoner` model name. This is optimized for complex tasks that require chains of thought, whereas `deepseek-chat` is better for standard, fast-turnaround conversational tasks.
Source
Change Log | DeepSeek API Docs"deepseek-reasoner corresponds to DeepSeek-V3.2's thinking mode"