# Vega-Altair vs Lets-Plot

## Key differences

- Vega-Altair has 5.9× as many GitHub stars as Lets-Plot (10.5K vs 1.8K).
- Lets-Plot had more development activity over the last 12 months: 511 commits vs 156.
- Vega-Altair is downloaded 888× as often on PyPI (10.4M vs 11.7K per week).
- Vega-Altair is licensed under BSD-3-Clause; Lets-Plot under MIT.
- Vega-Altair is written primarily in Python, Lets-Plot in Kotlin.
- Vega-Altair is the older project: its repository was created in 2015, Lets-Plot's in 2019.

| | Vega-Altair | Lets-Plot |
|---|---|---|
| Description | Declarative statistical visualizations, based on Vega-Lite. | Grammar of graphics plotting library for Python and Kotlin, by JetBrains. |
| GitHub stars | 10,509 | 1,783 |
| Commits (12 months) | 156 | 511 |
| Contributors | 185 | 21 |
| License | BSD-3-Clause | MIT |
| Language | Python | Kotlin |
| Status | Active | Maintained |
| Install | `pip install altair` | `pip install lets-plot` |

Source: https://awesomedataviz.com/compare/altair-vs-lets-plot/ · Data updated 2026-11-01 · Content: CC BY 4.0, Awesome Dataviz (https://awesomedataviz.com).