--- title: OpenAI | Scenario Docs --- > This page is auto-generated from model configurations. Last updated: 2026-09-25. This reference lists all available **OpenAI** 3d generation models and their parameters. Use these parameter names when calling the [Generation API](/api/postgeneratecustom/index.md). - [Scenario GPT-6 Astra 3D](#scenario-gpt-6-astra-3d) --- ## Scenario GPT-6 Astra 3D Turn reference images into an editable 3D object — named parts, clean topology, per-part materials. Best for props and hard-surface subjects, not characters. **Model ID:** `model_scenario-gpt6-astra-3d` **Capabilities:** `img23d` **LLM Markdown:** | Parameter | Type | Required | Default | Min | Max | Allowed Values | Description | | ------------- | ----------- | -------- | --------- | ---- | --- | ----------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `images` | file\_array | Yes | - | - | - | - | 1 to 8 photos or renders of one object. The first image sets the viewpoint the result is checked against; extra views help with the unseen sides. | | `prompt` | string | No | - | - | - | - | Name the object in a few words, e.g. ‘a tugboat’. Worth filling in when the reference has clutter or more than one object in it, so the model knows which one to build. | | `buildEffort` | string | No | `maximum` | - | - | `standard`, `high`, `maximum` | How much work goes into modeling the object. Use High or Maximum for mechanical or detailed subjects; Standard is faster and cheaper for simple shapes. | | `refineSteps` | number | No | `7` | 0 | 10 | - | Maximum correction passes. The run stops on its own once the result stops improving; a lower cap saves cost but can cut it off before that point. | | `faceBudget` | number | No | `250000` | 1000 | - | - | Hard cap on the delivered model’s triangle count, applied at export. 10k–50k for game-ready assets; 250k keeps fine detail. |