DeepSeek V4 Pro 0813 quietly released

DeepSeek has quietly released V4 Pro 0813 with support for the Responses API format, allowing developers to integrate DeepSeek models using OpenAI's SDK with a simple configuration change to the base_url. The API now supports streaming responses via server-sent events (SSE) and includes various event types for tracking response generation stages, including reasoning text, output text, and function calls. The release aims to meet demand by providing compatibility with existing Codex implementations through straightforward API integration.