# Are Spicy parsers slower than Binpac parsers?

**URL:** <https://community.zeek.org/t/are-spicy-parsers-slower-than-binpac-parsers/7794>\
**Category:** Announcements\
**Tags:** development, spicy\
**Created:** [June 3, 2025, 5:48pm UTC](https://community.zeek.org/t/are-spicy-parsers-slower-than-binpac-parsers/7794 "2025-06-03T17:48:22Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![etyp](https://yyz1.discourse-cdn.com/flex011/user_avatar/community.zeek.org/etyp/32/744_2.png) [@etyp](https://community.zeek.org/u/etyp)\
**Post date:** [June 3, 2025, 5:48pm UTC](https://community.zeek.org/t/are-spicy-parsers-slower-than-binpac-parsers/7794/1 "2025-06-03T17:48:22Z")

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Hi! I wrote on the Zeek blog about some of the performance investigations with Spicy parsers compared to Binpac parsers. Check it out if you’re curious about upcoming optimization work with Spicy 🙂

> **[Zeek: Are Spicy parsers slower than Binpac parsers?](https://zeek.org/2025/06/are-spicy-parsers-slower-than-binpac-parsers/)**
>
> Within Zeek, there are two separate parser generators: Binpac (the old one) and Spicy (the new one). Both allow users to write protocol parsers by declaring what the protocol looks like rather than…

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**Author:** ![seth](https://yyz1.discourse-cdn.com/flex011/user_avatar/community.zeek.org/seth/32/642_2.png) [@seth](https://community.zeek.org/u/seth)\
**Post date:** [June 3, 2025, 6:41pm UTC](https://community.zeek.org/t/are-spicy-parsers-slower-than-binpac-parsers/7794/2 "2025-06-03T18:41:22Z")

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Great post and it’s nice to have links to the ongoing optimization work!