# step-gui [Canonical model page](https://headlessthrones.com/models/stepfun-step-gui) · [Model library](https://headlessthrones.com/models) Public catalog reference from Headless Thrones. Exact catalog ID: `stepfun-step-gui`. 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-gui 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-gui#model-answer-identity) · [Access](https://headlessthrones.com/models/stepfun-step-gui#model-answer-access) · [Inputs & outputs](https://headlessthrones.com/models/stepfun-step-gui#model-answer-modalities) · [Model details](https://headlessthrones.com/models/stepfun-step-gui#model-answer-research) ### Which step-gui does this page describe? step-gui is a model record from **StepFun** in the Step family. [Source](https://platform.stepfun.com/docs/zh/guides/models/model-lab) The recorded model identifier or checkpoint is `step-gui`. Use that exact identifier when checking documentation or a provider listing. [Source](https://platform.stepfun.com/docs/zh/guides/models/model-lab) ### How can you access step-gui? The catalog documents **API** access for step-gui. [Source](https://platform.stepfun.com/docs/zh/guides/models/model-lab) As of the catalog check, this version was listed as a preview. [Source](https://platform.stepfun.com/docs/zh/guides/models/model-lab) 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 can step-gui receive and generate? Documented inputs: **text and image**. [Source](https://platform.stepfun.com/docs/zh/guides/models/model-lab) Documented outputs: **text**. [Source](https://platform.stepfun.com/docs/zh/guides/models/model-lab) 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-gui? These details come from the linked publisher material for this model. Reported capabilities and training descriptions are publisher statements, not independent test results. **Experimental access**: Step GUI belongs to Model Lab: developer access is free, but intended for local development and testing rather than production. [Source](https://platform.stepfun.com/docs/zh/guides/models/model-lab) **Availability constraints**: Model Lab limits concurrency to one, does not guarantee continuous availability and may remove models when an operating period ends. [Source](https://platform.stepfun.com/docs/zh/guides/models/model-lab) **Intended task**: The publisher describes a visual GUI model that interprets screens and plans actions such as clicks, typing, scrolling, long presses and dragging across multi-step application tasks. [Source](https://platform.stepfun.com/docs/zh/guides/models/model-lab) **Catalog qualifications:** Official Model Lab experimental GUI model; vendor recommends testing rather than production. [Source](https://platform.stepfun.com/docs/zh/guides/models/model-lab) **Evidence still missing here:** complete input/output pricing, context or input capacity, 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-1o-turbo-vision](https://headlessthrones.com/models/stepfun-step-1o-turbo-vision) API · 32,000 context tokens ### [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