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Annotate anything with Potato: text, media, and agents

Potato is a free, open-source tool for annotating text, audio, images, video, interviews, and AI agent traces. You set up each study in one YAML file, run it on your own computer or server, and watch agreement between annotators while the study runs.

Potato's span annotation screen, with people, organizations, places, and dates highlighted in a news paragraph.
Potato 2.13.1 running on sample data.Try Live Demo (opens in a new tab)

Get started in 4 steps

From installation to annotation in minutes.

1.
pip install potato-annotation
# Install Potato
2.
# Create your config.yaml
# Configure your task
3.
potato start config.yaml
# Launch the server
4.
# Open localhost:8000
# Start annotating

What's in Potato

Built for researchers and annotation teams.

Agent Evaluation
Annotate multi-agent teams on a clickable interaction graph, evaluate computer-use, voice, and video agents, calibrate LLM judges against human labels, edit trajectories into SFT and DPO training data, and rank models in an arena, all from YAML.
80 Annotation Types
Radio, multiselect, likert, slider, text, span, best-worst scaling, pairwise, number, multirate, video, image, audio, bounding box, polygon, event, and taxonomy annotation, plus qualitative coding (QDA Mode) with a living codebook, in-vivo codes, memos, and cases.
AI-Powered
LLM integration with OpenAI, Claude, and Gemini for hints, keyword highlighting, label suggestions, MACE competence estimation, option highlighting, and diversity ordering.
Multimedia Support
Annotate audio with waveforms, images with bounding boxes and polygons, and video with playback controls.
Active Learning
Five query strategies (uncertainty sampling, diversity-based selection, BADGE, BALD, and hybrid ensemble), plus an LLM cold start that picks the first instances before any labels exist.
Zero Code Setup
Configure everything in YAML. Building an annotation interface takes no programming.

Browse annotation designs

460+ configurations you can download and run.

Ready to start annotating?

Potato is free and open source. Install it with pip and run your first task locally.