Labelme

Plans and prices

Every plan, in full

On the record

AI models

It supports SAM, SAM2, SAM3, EfficientSAM, and YOLO-World, which run locally rather than through a hosted API.labelme.io · read 4 Oct 2026

AI prompts

SAM3 accepts box and text prompts, while SAM2 or EfficientSAM can be used for point prompts; YOLO-World returns bounding boxes.labelme.io · read 4 Oct 2026

Annotation types

It supports polygons, rectangles, oriented rectangles, circles, lines, points, masks, and rich attributes.labelme.io · read 4 Oct 2026

Dataset tools

The Pro toolkit includes batch processing, visual review, image resizing with annotations, label renaming, dataset statistics, export, and command-line automation.labelme.io · read 4 Oct 2026

Integrations and exports

Pro automates conversion to YOLO, YOLO-OBB, and Pascal VOC, can import YOLO and YOLO-OBB, and produces masks, visualizations, and dataset statistics.labelme.io · read 4 Oct 2026

Maker and history

The maker identifies Kentaro Wada as founder and developer, and says the open-source project began in 2016.labelme.io · read 4 Oct 2026

Notable limits

The three-day trial excludes the Pro dataset toolkit, Starter cannot be upgraded to Pro at a discount, and Pro toolkit tools require Python.labelme.io · read 4 Oct 2026

Offline use

After each model's one-time download, annotation and AI assistance work offline; the maker says air-gapped use is possible by moving models from a connected machine or requesting its offline pack.labelme.io · read 4 Oct 2026

Open source and licensing

The annotation application is GPL-3.0, while the Pro dataset toolkit is closed source; the AI models have their own licenses.labelme.io · read 4 Oct 2026

Operating system limits

The desktop app supports Apple Silicon macOS, 64-bit Windows, and 64-bit Linux; Intel Macs are supported only through v7.0.4.labelme.io · read 4 Oct 2026

Privacy

The maker says images, annotations, and exports remain on the user's machine, with no cloud processing or telemetry; model weights download on first use.labelme.io · read 4 Oct 2026

Purpose

Labelme is an AI-powered image annotation tool for creating training datasets, aimed at researchers, engineers, and teams.labelme.io · read 4 Oct 2026

Support

Pro and Pro Lifetime include priority email support with a stated 48-hour response, and team-license inquiries receive a response within one business day.labelme.io · read 4 Oct 2026

Team licensing

Team and enterprise licenses are arranged by email with Pro per seat, one invoice, and volume pricing; each seat is for one named person.labelme.io · read 4 Oct 2026

Alternatives to Labelme

R RoboflowAndroidiPhone & iPad+5 LS Label StudioWebWindows+4 VI VGG Image AnnotatorWebWindows+3 MA MakeSense.aiWebWindows+3 C CVATWebAPI+1 S SuperviselyWebAPI+1 DA Draw AttentionWebSelf-hosted AA Annota AIWebSelf-hosted

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