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Astra

Method overview: Astra generates future video chunk by chunk from an image, actions, and optional memory.

Wan2.1-1.3B interactive world with camera actions. Official garden_1 Sekai demo is runner-verified: 832×480, 97 frames, 20 fps. Apache-2.0 bases.

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Astra is an interactive world model on a Wan2.1 backbone: one image plus camera actions roll out navigable world video. WorldFoundry vendors the infer-only runtime under worldfoundry/synthesis/visual_generation/kling/astra_runtime and exposes it as AstraPipeline. Studio defaults mirror the official Wan2.1-backed Sekai image rollout.

Method overview: Astra generates future video chunk by chunk from an image, actions, and optional memory.
Method overview: Astra generates future video chunk by chunk from an image, actions, and optional memory.

The official paper is Astra: General Interactive World Model with Autoregressive Denoising (ICLR 2026, arXiv 2512.08931). Project: eternalevan.github.io/Astra-project. Code: EternalEvan/Astra. Weights: EvanEternal/Astra (mirror KwaiVGI/Astra) plus Wan-AI/Wan2.1-T2V-1.3B. Recorded license on those bases: apache-2.0. Publishing institution is not recorded here.

Runner parity is verified: the official garden_1 Sekai demo ran through the in-tree Studio/API path with forward_left camera control and emitted 97 frames at 832×480, 20 fps.

Build your run

Pipeline
AstraPipelineworldfoundry.pipelines.kling.pipeline_astra
TaskOfficial Sekai Image official-sekai-image
Environmentworldfoundry-unified-cu128
DeviceCUDA 12.8
Runnerworldfoundry.pipeline
Loadingfrom_pretrained
Invocationnative_or_standard_invocation
worldfoundry-eval run \
  astra \
  --pipeline.task-profile official-sekai-image \
  --json

What it is for

Astra world / video route as recorded.

Launch worldfoundry-eval run astra with --pipeline.task-profile official-sekai-image.

Score on CameraBench — camera-following accuracy of interactive rollouts.

Runtime contract

Required: prompt and image; optional: video; actions: camera_direction; artifacts: astra.mp4.

KnobVerified demo
Size832×480
Frames97
FPS20
Cameraforward_left on garden_1

Run in WorldFoundry

Status: Verified. Unified environment worldfoundry-unified-cu128 (Python 3.11, CUDA 12.8). Stage EvanEternal/Astra, Wan-AI/Wan2.1-T2V-1.3B, and EvanEternal/Astra among others locally — missing files fail at load, nothing is downloaded. Run worldfoundry-eval run astra with --pipeline.task-profile official-sekai-image. Catalog VRAM is unset.