In the wee hours of August 13th (Beijing Time), DeepSeek officially rolled out the full-fledged API interface for its V4 Pro model, bearing the version number DeepSeek-V4-Pro-0813. Prior to this, the complete version of V4-Flash had already been made available for public testing on July 31st. The full-scale release of V4 Pro places a strong emphasis on bolstering agent capabilities, showcasing remarkable performance enhancements across multiple benchmark tests, thereby outperforming rivals like Claude. Concurrently, the developer preview version of DeepSeek Harness v0.1 has also been officially unveiled, boasting a plug-in open architecture with its source code released under the MIT license. Furthermore, DeepSeek has declared its intention to revise API pricing by implementing a peak-valley pricing strategy, with the new rates set to take effect on August 17th.