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BAGEL

ByteDanceOpen WeightsPending Human Review

BAGEL is ByteDance Seed’s unified language-capable multimodal model for visual understanding, text generation, image creation, and editing. It uses a mixture of Transformer experts with 14B total and 7B active parameters, combining semantic and pixel-level image encoders with interleaved multimodal training. Image questions and language reasoning make it eligible alongside its generative visual capabilities. Apache-licensed weights and inference code were released on May 20, before the later May 28 Seed blog. The model is fine-tuned from Qwen2.5-7B-Instruct with additional vision components, and can be run locally or evaluated through its demo.

2025-05-20
14B total, 7B active
Mixture-of-Transformer-Experts with vision encoders
Apache-2.0

Specifications

Parameters
14B total, 7B active
Architecture
Mixture-of-Transformer-Experts with vision encoders
License
Apache-2.0
Type
multimodal
Modalities
textimagevideo

Benchmark Scores

Advanced Specifications

Model Family
BAGEL
Finetuned From
Qwen2.5-7B-Instruct
API Access
Not Available
Chat Interface
Available
Variants
BAGEL-7B-MoT

Capabilities & Limitations

Capabilities
visual question answeringmultimodal reasoningimage generationimage editing
Known Limitations
Visual generation and editing can fail to follow complex constraintsVideo and world-modeling demonstrations do not establish general autonomous controlLocal inference requires substantial memory and compatible components
Notable Use Cases
unified visual assistantsimage-based question answeringmultimodal generation research

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