ByteDance: Doubao-Seed-1.8 API
Doubao-Seed-1.8 is a generalized agentic model purpose-built for real-world complexity. It represents a significant evolution in the Doubao family, emphasizing the seamless integration of perception, reasoning, and iterative action. Designed for "High-Value Agency," the model excels in handling long-context information fusion and multi-step execution. A key highlight is its upgraded visual perception, which doubles the video frame processing capacity to 1,280 frames, enabling deep comprehension of long-form videos for security monitoring and educational content analysis. It also introduces "Native API Context Management," allowing for more flexible and cost-effective handling of large-scale document pools and enterprise knowledge bases.
- Context window: 256,000 tokens
- Max output: 32,000 tokens
- Input: text, image, video
- Output: text
- Reasoning: Supported
- Tool calling: Supported
- File input: Supported
- Released: 2025-12-17
- Knowledge cutoff: 2025-10-31
Frequently Asked Questions
What is the context window of Doubao-Seed-1.8?
Doubao-Seed-1.8 supports a context window of up to 256,000 tokens.
Does Doubao-Seed-1.8 support function calling?
Yes. Doubao-Seed-1.8 supports tool / function calling.
Does Doubao-Seed-1.8 support reasoning?
Yes. Doubao-Seed-1.8 is a reasoning-capable model.
What is the knowledge cutoff of Doubao-Seed-1.8?
The knowledge cutoff of Doubao-Seed-1.8 is 2025-10-31.