doubao-seed-2-1-pro-260628

Description

ByteDance Doubao Seed 2.1 Pro — flagship Doubao agent model for production work, covering deep thinking, text generation, multimodal understanding, tool calling, and structured output, for which the vendor recommends json_schema mode. 256K context window with 256K maximum input, up to 256K output tokens (4K by default), and a 256K chain-of-thought budget. Accepts text, image, and video and returns text; audio understanding is not listed for the 2.1 line. Supports implicit and explicit context caching, including prefix and session caches.