Doubao Seed 1.8
Seed1.8 is ByteDance’s generalized agentic language and vision model, served through Volcano Engine as Doubao 1.8 and through BytePlus. It integrates search, code generation, and graphical-interface reasoning, with three thinking modes for tasks of varying complexity. Text and image inputs support language answers and sustained workflows, including educational questions, information processing, and software engineering. Its official model portfolio dates the release to December 17, preceding the December 18 explanatory announcement. Public weights, parameter count, and full backbone details are not disclosed in the reviewed sources.
2025-12-17
Undisclosed multimodal language-model architecture
Proprietary
Specifications
- Architecture
- Undisclosed multimodal language-model architecture
- License
- Proprietary
- Type
- multimodal
- Modalities
- textimage
Benchmark Scores
Advanced Specifications
- Model Family
- Seed
- API Access
- Available
- Chat Interface
- Not Available
- Variants
- ByteDance-Seed-1.8
Capabilities & Limitations
- Capabilities
- agentic reasoningcodingvisionGUI interactiontool use
- Known Limitations
- Public weights are not availableSearch and interface actions require compatible external toolsProvider benchmark results depend on the evaluation harness
- Notable Use Cases
- multi-step researchsoftware engineering agentsvisual document assistance
- Tool Use Support
- Yes