Doubao Seed 1.6 Flash
Seed1.6 Flash is ByteDance’s low-latency multimodal reasoning tier, served through Volcano Engine and BytePlus. It supports text and visual input, optional deep thinking, and a documented 256K context with up to 16K output tokens. The model targets responsive assistants and high-volume visual or language tasks while retaining reasoning capability. Its independently positioned Flash tier is represented separately from the larger Seed1.6 model; its parameter count and detailed architecture are not publicly established in the reviewed sources. June 2025 release-month precision follows the official API catalog, without treating the 250615 snapshot suffix as a launch date.
2025-06
Undisclosed multimodal language-model architecture
Proprietary
Specifications
- Architecture
- Undisclosed multimodal language-model architecture
- License
- Proprietary
- Context Window
- 256,000 tokens
- Max Output
- 16,000 tokens
- Type
- multimodal
- Modalities
- textimage
Benchmark Scores
Advanced Specifications
- Model Family
- Seed
- API Access
- Available
- Chat Interface
- Not Available
- Variants
- ByteDance-Seed-1.6-flashdoubao-seed-1-6-flash-250615doubao-seed-1-6-flash-250715
Capabilities & Limitations
- Capabilities
- low-latency language generationvisionreasoning
- Known Limitations
- Public weights are unavailableQuality and latency depend on prompt and thinking settingsSeparate providers may expose different serving limits
- Notable Use Cases
- responsive visual assistantshigh-volume document analysisinteractive customer support