Agent-based coding tools can be useful when a task requires exploring a repository, using tools, or applying a series of changes. That approach also involves repeated file reads and tool calls, which can add context and API usage even for a small question.
For a narrower review, a simpler workflow may be sufficient: select the relevant code, describe the question, and review the response before deciding whether to make a change.
DeepSeek V4-Flash is one option for code explanations, debugging questions, or a review of a selected function. The response is a suggestion only; you remain responsible for evaluating and applying any change.
This is not intended to replace agent tools. The appropriate choice depends on the task, the model, the available budget, and how much control you want over the context sent to the model.