Seed Character is ByteDance Volcengine's conversational model purpose-built for role-play and character-driven dialogue, emphasizing stable persona adherence across extended immersive scenarios. Positioned inside the broader Doubao Seed family, it is designed to keep a chosen character voice, backstory, and mannerisms consistent over long, multi-turn exchanges, making it a natural fit for interactive storytelling, virtual companions, and scripted agent personas where breaking character is a primary failure mode. The model also accepts visual and moving-image inputs alongside text, so prompts can include reference images or short video clips to ground the persona's responses in a richer context.

Beyond dialogue, the model combines reasoning with function calling, prompt caching, and web search support, letting a character agent pause to think, invoke external tools, retrieve fresh information, and reuse prior conversation efficiently. It is exposed through an OpenAI-compatible chat completions interface, which simplifies integration into existing agent frameworks and orchestration layers. In practical terms, this means Seed Character can anchor the voice and personality layer of a larger pipeline while delegating factual lookups, structured tool use, and long-context memory to surrounding components, suiting production role-play systems, branded virtual assistants, and character-led simulations that need both expressive interaction and reliable tool-mediated behavior.