Model
Model explorer
Step-1V
CLOSEDStepFun · Step-1 family · released Sep 1, 2024
StepFun's first publicly released multimodal (vision) model, adding image understanding atop the Step-1 text base in September 2024; since deprecated in favor of newer Step vision models.
ReasoningCodingVisionFunction callingTool useAgentic
1905.6
Elo · unrated
Parameters
Undisclosed
Active params
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Context
32K tokens
Architecture
Dense multimodal transformer (LLM backbone + vision encoder), exact scale undisclosed
License
Proprietary
Languages
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API price (in/out)
No hosted API
Modalities
text · vision
Benchmark results
Bar shows position within the tracked field; marker = field best
best: InternVL3-78B · 906
Run it locally
Closed weights — available via API only. No local deployment.
Input / M tok
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Output / M tok
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API price — · each benchmark row carries its own source badge (see methodology)