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Step3 VL 10B

StepFunOpen WeightsPending Human Review

Step3 VL 10B is StepFun’s compact vision-language reasoning model, combining an approximately 1.8B visual encoder with a language backbone. It targets visual STEM reasoning and language generation from images. PaCoRe mode combines evidence from sixteen parallel rollouts, so its scores should be separated from ordinary single-model sampling. Apache-licensed base and post-trained checkpoints support research and local evaluation. The full weight footprint, context length, and selected reasoning mode affect deployment cost and latency.

2026-01-14
10B
Vision-language Transformer
Apache-2.0

Specifications

Parameters
10B
Architecture
Vision-language Transformer
License
Apache-2.0
Type
multimodal
Modalities
textimage

Benchmark Scores

Advanced Specifications

Model Family
Step
API Access
Not Available
Chat Interface
Not Available

Capabilities & Limitations

Capabilities
visual reasoningSTEM reasoninglanguage generation
Known Limitations
Sparse models still require storage for all weightsParallel reasoning consumes additional inference computeEvaluation settings strongly affect reported scores
Notable Use Cases
private assistantscoding or document researchmultimodal experimentation

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