The https://github.com/thomhurst/TUnit/tree/main/tools/speed-comparison/xUnitTimer/xUnitTimer uses XUnit v2 and the newest version of XUnit is v3. This version uses xunit.v3 instead of xunit nuget package. Please see the instruction of migration https://xunit.net/docs/getting-started/v3/migration.

Maybe it's worth keeping both comparisons: with v2 and v3, so people may decide if invest time in migration to v3 or to TUnit?