# step-1o-turbo-vision [Canonical model page](https://headlessthrones.com/models/stepfun-step-1o-turbo-vision) · [Model library](https://headlessthrones.com/models) Public catalog reference from Headless Thrones. Exact catalog ID: `stepfun-step-1o-turbo-vision`. Catalog source-check date: 2026-10-23. This brief contains the public catalog answers and any catalog guide, not private drafts, historical editorial revisions or independently measured rankings. The canonical HTML page may also display separately published editorial. Current catalog answers ## What to know about step-1o-turbo-vision AI-compiled from linked model documentation. This is a catalog reference, not an independent performance review. Catalog checked October 23, 2026. [Exact model](https://headlessthrones.com/models/stepfun-step-1o-turbo-vision#model-answer-identity) · [Access](https://headlessthrones.com/models/stepfun-step-1o-turbo-vision#model-answer-access) · [Token limits](https://headlessthrones.com/models/stepfun-step-1o-turbo-vision#model-answer-context) · [Inputs & outputs](https://headlessthrones.com/models/stepfun-step-1o-turbo-vision#model-answer-modalities) · [Model details](https://headlessthrones.com/models/stepfun-step-1o-turbo-vision#model-answer-research) ### Which step-1o-turbo-vision does this page describe? step-1o-turbo-vision is a model record from **StepFun** in the Step family. [Source](https://platform.stepfun.com/docs/zh/guides/models/list) The recorded model identifier or checkpoint is `step-1o-turbo-vision`. Use that exact identifier when checking documentation or a provider listing. [Source](https://platform.stepfun.com/docs/zh/guides/models/list) ### How can you access step-1o-turbo-vision? The catalog documents **API** access for step-1o-turbo-vision. [Source](https://platform.stepfun.com/docs/zh/guides/models/list) As of the catalog check, this version was listed as available. [Source](https://platform.stepfun.com/docs/zh/guides/models/list) For API use, confirm the exact model identifier, your account and region, and the endpoint's current limits in the linked documentation. An API listing does not establish access through a consumer subscription. ### What are step-1o-turbo-vision's context and output limits? The documented **context window is 32,000 tokens**. [Source](https://platform.stepfun.com/docs/zh/guides/models/list) A separate maximum-output value is not established in this record. The context or input figure should not be used as an output allowance. Context, input and output limits describe different constraints. Do not add the figures together to infer a larger window. Check the endpoint's accounting for conversation history, system instructions, tools, media and generated tokens; a documented maximum is not a guarantee of answer quality or a measured usable capacity. ### What can step-1o-turbo-vision receive and generate? Documented inputs: **text, image, and video**. [Source](https://platform.stepfun.com/docs/zh/guides/models/list) Documented outputs: **text**. [Source](https://platform.stepfun.com/docs/zh/guides/models/list) Input support and output generation are separate capabilities. Reading an image does not establish image generation; a text output listing does not establish speech output. File sizes, formats and media limits depend on the documented implementation. ### What distinguishes step-1o-turbo-vision? These details come from the linked publisher material for this model. Reported capabilities and training descriptions are publisher statements, not independent test results. **Image and video request limits**: The model listing allows up to 60 input images with a combined size below the stated 20M limit, or an MP4 video smaller than 128 MB. [Source](https://platform.stepfun.com/docs/zh/guides/models/list) **Documented use**: StepFun lists image/video understanding, AI question answering and social-post copy generation as intended applications; this is a publisher description. [Source](https://platform.stepfun.com/docs/zh/guides/models/list) **Catalog qualifications:** Official context K/M display values normalized as decimal tokens. [Source](https://platform.stepfun.com/docs/zh/guides/models/list) **Evidence still missing here:** complete input/output pricing and knowledge and training-data cutoffs. Missing documentation is not evidence that a feature is unavailable. Headless Thrones has not independently benchmarked this model for this reference. Evaluate it on representative work before choosing it; these facts do not rank its accuracy, reliability, speed or suitability against another model. Keep the exact version in view ## Other Step models from StepFun. These are separate records in the same publisher family. A shared family name does not establish equal capabilities or interchangeable licenses. ### [Step-3.5-Flash](https://headlessthrones.com/models/stepfun-step-3-5-flash) API · Open weights · 256,000 context tokens ### [step-3.5-flash-2603](https://headlessthrones.com/models/stepfun-step-3-5-flash-2603) API · 256,000 context tokens ### [Step-3.5-Flash-Base](https://headlessthrones.com/models/stepfun-step-3-5-flash-base) Open weights ### [Step-3.5-Flash-Base-Midtrain](https://headlessthrones.com/models/stepfun-step-3-5-flash-base-midtrain) Open weights ### [Step-3.7-Flash](https://headlessthrones.com/models/stepfun-step-3-7-flash) API · Open weights · 256,000 context tokens ### [Step-Audio-2-mini](https://headlessthrones.com/models/stepfun-step-audio-2-mini) Open weights