DeepSeek posted an official announcement launching DeepSeek-V4-Pro. The company described major agent upgrades that it said delivered strong production gains, plus flexible reasoning effort controls for both V4-Pro and V4-Flash. The update also added native support for the OpenAI Responses API with one-click Codex setup. Separate posts by creators asserted that leaked benchmarks matched the release and offered mixed commentary on DeepSeek's recent progress and pricing.