marimo | a next-generation Python notebook

🎓 Classes using marimo. See how educators across the world teach with marimo.
Transform data, train models, and run SQL queries with marimo — feels like an AI-native reactive notebook, stored as Git-friendly reproducible Python. Seamlessly run as scripts and apps. All open source.
Founder/CEO Kaggle, Sumble
Founder/CEO Pydantic
Creator of Django, llm
MTS Thinking Machines, Founding engineer Modal
Run one cell and marimo reacts by running affected cells, eliminating the error-prone chore of managing notebook state. For expensive notebooks, configure marimo to mark outputs as stale instead of autorunning.
Built-in interactive elements like sliders, dropdowns, dataframe tables, and selectable plots make working with data feel fast, futuristic, and fun.
marimo notebooks are pure Python, stored as .py files Version with Git, run as Python scripts, reuse as modules, manage with uv and PEP 723 metadata, test with PyTest, and integrate with your favorite developer tools.
Notebooks are executed in a deterministic order,with no hidden state — delete a cell and marimo deletes its variables while updating affected cells. Optionally serialize package requirements in notebook files, with marimo managing virtual environments for you.
Share interactive notebooks on the web by exporting to WebAssembly-powered HTML or serving notebooks as web apps with the marimo CLI. Run as scripts locally or in pipelines.
Query dataframes and databases with marimo's built-in SQL cells. These integrate with Polars, Pandas, PyArrow, DuckDB, SQLite, Postgres, MySQL, and many other backends.
The marimo editor comes with GitHub Copilot-style autocomplete, hover tooltips, vim keybindings, code formatting, debugging panels, and extensive hotkeys. marimo also ships with a CLI, a library, and a VS Code extension.
Connect any AI agent to running marimo notebook sessions with marimo pair, and code in an AI-native editor with copilots, AI assistance, inline edits, and context-aware chat, using any model, hosted or local.
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