Voxel51

Voxel51 is the company behind FiftyOne, an open source toolkit for building, curating and evaluating visual AI datasets. Voxel51 was founded in 2018 at the University of Michigan, when Professor Jason Corso teamed up with his PhD student Brian Moore to turn their computer vision research into developer tooling. FiftyOne is released under the Apache 2.0 licence on GitHub, and a commercial Voxel51 platform built on it adds hosted and self hosted deployments, annotation workflows, collaboration and enterprise security. Voxel51 3.0, launched in October 2026, relaunches that platform for physical AI, bringing search, curation, annotation and evaluation of multimodal sensor data into one product with time series support that places several sensor streams on one timeline.

FiftyOne renders 3D Gaussian splats in its 3D viewer from version 1.21.0, released on August 19, 2026, and the Voxel51 2.24.0 enterprise release that shipped the same day includes it. A splat file in PLY, SPZ, SPLAT, KSPLAT, SOG or RAD format can be added to a dataset directly as a 3D sample, or placed in an FO3D scene through the GaussianSplat class alongside meshes, point clouds and primitive shapes. Rendering runs on Spark, the MIT licensed three.js splat renderer from World Labs, which the FiftyOne App pins at version 2.1.0. Each splat takes an opacity multiplier and a colour tint, and its appearance and rendering can be tuned from a settings panel in the App's 3D visualizer.

FiftyOne can also generate splats. Version 1.14.0, released on March 31, 2026, added Apple's SHARP single image to 3D Gaussian splat model, which writes a .ply splat for each input image and stores its location in a splat_path field on the sample, so the result opens in the same 3D viewer as the source dataset.

Radiance field vendors plug into the same viewer. Miris ships a plugin that streams its radiance field backed spatial content into FiftyOne's native 3D viewer, on both the open source release and the enterprise platform, with labels, annotations and metadata rendered in context and a sample workflow that runs computer vision against Miris streams to generate bounding boxes. Voxel51's partnership with Foretellix places FiftyOne between Foretellix's Foretify platform and NVIDIA's Omniverse NuRec library for autonomous driving work, where FiftyOne checks pose calibration, sensor alignment and annotation quality on drive log snippets before they are reconstructed as Gaussian splats, then compares the real and synthetic data that come back.

FiftyOne installs as a Python package and serves its App in a web browser. The hosted Voxel51 platform has a free tier with three datasets of up to 10,000 samples each, 20GB of hosted storage and 30 hours of compute a month, while Team and Custom plans are quoted by sales and add on premise and air gapped deployment options.