Arti 1.4.5 is released: Continued work on xon-based flow control, Conflux.

by gabi | July 8, 2025

Arti is our ongoing project to create a next-generation Tor client in Rust. We're happy to announce the latest release, Arti 1.4.5.

This release of Arti continues our development efforts towards supporting xon-based (proposal 324) flow control and multi-legged tunnels in Arti via our Conflux feature.

In addition to the ongoing client feature efforts, the Network Team continues working on the internals of Arti to make it ready for relay and bridge support, but no user-visible changes have occurred in this direction for this release.

For full details on what we've done, including API changes, and for information about many more minor and less visible changes, please see the CHANGELOG.

For more information on using Arti, see our top-level README, and the documentation for the arti binary.

Thanks to everybody who's contributed to this release, including Dan Ballard, hashcatHitman, hjrgrn, nield, parazyd, and trinity-1686a.

Also, our deep thanks to the Bureau of Democracy, Human Rights and Labor, and our other sponsors for funding the development of Arti!

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