ByteDance logo

Doubao Seed 1.8

ByteDanceProprietaryPending Human Review

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

Related Models