# Zygote Performance (Again...)

**URL:** <https://discourse.julialang.org/t/zygote-performance-again/62753>\
**Category:** General Usage\
**Tags:** zygote, forwarddiff, tullio\
**Created:** [June 11, 2021, 4:51pm UTC](https://discourse.julialang.org/t/zygote-performance-again/62753 "2021-06-11T16:51:26Z")\
**Posts on this page:** 1\
**Showing post:** 14

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**Author:** ![cortner](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/cortner/32/204_2.png) [@cortner](https://discourse.julialang.org/u/cortner)\
**Post date:** [June 11, 2021, 8:25pm UTC](https://discourse.julialang.org/t/zygote-performance-again/62753/14 "2021-06-11T20:25:19Z")

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thanks for suggesting those alternative packages. I understand that there are many alternatives. My choice of Zygote was that this was going to be the future of AD and I cannot afford to invest in something that will be replaced in a few months.

But then I just learned that Zygote will be replaced with something called Diffractor?

So what should I be investing in? Will I be relatively safe if I focus my development around `ChainRules` and use Zygote or any of these others only sparingly?

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_[View the full topic](https://discourse.julialang.org/t/zygote-performance-again/62753)._