On April 14, the technical details of ByteDance’s latest thinking model Seed-Thinking-v1.5 were made public, and the interface will be opened through Volcano Engine on April 17 for user experience. It is reported that the model performs outstandingly in professional fields such as mathematics, programming, scientific reasoning, and general tasks such as creative writing. At the same time, the model adopts the MoE architecture, with a total parameter of 200B and an activation parameter of 20B. It has a significant reasoning cost advantage, and the unit reasoning cost is reduced by 50 compared to DeepSeek R1.