doubao-seed-1-8 · ByteDance
Doubao's strongest multimodal Agent model Seed1.8 has powerful multimodal capabilities, supports image and text input, and can efficiently and accurately complete tasks in scenarios such as information retrieval, code generation, GUI interaction, and complex workflows, meeting increasingly diverse technical demands.
Doubao's strongest multimodal Agent model Seed1.8 has powerful multimodal capabilities, supports image and text input, and can efficiently and accurately complete tasks in scenarios such as information retrieval, code generation, GUI interaction, and complex workflows, meeting increasingly diverse technical demands.
Doubao Seed 1.8 has a 256,000 token context window.
On AIHubMix, Doubao Seed 1.8 costs $0.1096 per million input tokens and $0.274 per million output tokens. Cached input reads are billed at $0.0219 per million tokens.
Doubao Seed 1.8 accepts text, image, video, document and audio input.
Doubao Seed 1.8 supports thinking, web search, tool calling, function calling and structured outputs. Per-protocol parameter support is listed in the capability table on this page.
Doubao Seed 1.8 is available through the AIHubMix unified API. The API is OpenAI-compatible: point your OpenAI SDK at https://aihubmix.com/v1, use your AIHubMix API key, and set the model name to doubao-seed-1-8 — no other code changes needed.
Doubao Seed 1.8 is developed by ByteDance. AIHubMix aggregates it alongside models from other providers behind one API and one bill.
Doubao Seed 1.8 was released on December 28, 2025 by ByteDance.
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