StepFun

Step-1o Vision 32K

Step-1o Vision 32K is a proprietary model from StepFun.

Developer
StepFun
Released
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Context window
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Price in / out, per 1M tokens
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Weights
Proprietary
Inputs
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Reasoning
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Tool use
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LMArena, by category

LeaderboardRatingRankVotes
VisionLMArena1122127 / 1462.8K

LMArena, CC BY 4.0, as of Oct 22, 2026. Where a model is rated at several effort levels, its best is shown.

Compare Step-1o Vision 32K

StepFun

Builds the Step family of large multimodal models. Founded 2023, based in Shanghai. stepfun.com

Questions

Who makes Step-1o Vision 32K?

Step-1o Vision 32K is made by StepFun, founded 2023 and based in Shanghai.

Is Step-1o Vision 32K open source?

No. Step-1o Vision 32K is proprietary and served through its provider’s API.

Sources

Every number on this page comes from these sources; models without a published number show none. Download the data. Cite as “Nexus Explorer, nexus.inc/models”.