History

The project's life, one year at a time, told from the commit record: how activity rose and fell against the project's own baseline, who arrived when, and what was released.

Span
2018 – 2026
9 years
Peak Year
2025
7,667 commits
Releases
263
latest in 2026
2018BIRTHfirst commits

469 commits (1.2%) · +26,785 / −4,440 lines · 19 authors

Led by Matthew Johnson (226 commits)

First commits: Matthew Johnson, Peter Hawkins, Roy Frostig, Dougal Maclaurin, Alex Wiltschko, vishwakftw (+13 more)

2019STEADY

2,953 commits (7.5%) · +82,693 / −35,212 lines · 102 authors

Led by Matthew Johnson (1,163 commits)

First commits: Skye Wanderman-Milne, James Bradbury, George Necula, fehiepsi, Anselm Levskaya, wyjw (+83 more)

Released: workflow_test, jaxlib-v0.1.33, jaxlib-v0.1.34, jaxlib-v0.1.35, jaxlib-v0.1.36 (+2 more)

2020STEADY

3,028 commits (7.7%) · +163,375 / −97,012 lines · 187 authors

Led by Matthew Johnson (504 commits)

First commits: jax authors, Jake Vanderplas, Benjamin Chetioui, Jake VanderPlas, Adam Paszke, Jean-Baptiste Lespiau (+133 more)

Released: jax-v0.1.58, jaxlib-v0.1.38, jax-v0.1.59, jaxlib-v0.1.39, jaxlib-v0.1.40 (+34 more)

2021STEADY

3,666 commits (9.3%) · +174,005 / −92,212 lines · 163 authors

Led by jax authors (1,481 commits)

First commits: colemanliyah, Parker Schuh, TinaZetongJia, Lukas Geiger, Tianjian Lu, Oliver Dutton (+101 more)

Released: jaxlib-v0.1.58, jax-v0.2.8, jaxlib-v0.1.59, jax-v0.2.9, jaxlib-v0.1.60 (+32 more)

2022STEADY

4,175 commits (10.6%) · +174,954 / −105,942 lines · 198 authors

Led by jax authors (1,502 commits)

First commits: Rohit Santhanam, Kuangyuan Chen, YouJiacheng, Hyeontaek Lim, Eugene Burmako, Xin Zhou (+125 more)

Released: jax-v0.2.27, jaxlib-v0.1.76, jax-v0.2.28, test-jaxlib, jax-v0.3.0 (+59 more)

2023STEADY

4,502 commits (11.4%) · +209,695 / −110,584 lines · 198 authors

Led by jax authors (1,554 commits)

First commits: Tomás Longeri, Jevin Jiang, Samuel Agyakwa, Junwhan Ahn, Cjkkkk, jiayaobo (+110 more)

Released: jax-v0.4.2, jax-v0.4.2-rc, jaxlib-v0.4.2, jax-v0.4.3, jax-v0.4.3-rc (+60 more)

2024STEADY

6,118 commits (15.5%) · +298,165 / −155,357 lines · 270 authors

Led by jax authors (2,225 commits)

First commits: Dan Foreman-Mackey, rajasekharporeddy, Justin Fu, Christos Perivolaropoulos, Ruturaj4, Nitin Srinivasan (+160 more)

Released: jax-v0.4.24, jax-v0.4.24-rc, jaxlib-v0.4.24, jax-v0.4.25, jax-v0.4.25-rc (+28 more)

2025PEAKbusiest year

7,667 commits (19.5%) · +432,455 / −260,847 lines · 306 authors

Led by jax authors (2,070 commits)

First commits: Allan Renucci, Michael Whittaker, Zac Mustin, Jake Harmon, Yixiu Liu, Matthias Kramm (+160 more)

Released: jax-v0.5.0, jax-v0.5.1, jax-v0.5.2, jax-v0.5.3, jax-v0.6.0 (+7 more)

2026SURGEwell above the usual pace

6,818 commits (17.3%) · +440,408 / −242,854 lines · 286 authors

Led by jax authors (1,758 commits)

First commits: Levon Ter-Grigoryan, magaonka-amd, Alexandros Theodoridis, tsrw2048, Paul Biberstein, kranipa (+130 more)

Released: jax-v0.9.1, jax-v0.9.2, jax-v0.10.0, jax-v0.10.1, jax-v0.11.0 (+1 more)