# Persalys 18.1 just released

**URL:** <https://persalys.discourse.group/t/persalys-18-1-just-released/166>\
**Category:** Announcements\
**Created:** [June 27, 2025, 3:08pm UTC](https://persalys.discourse.group/t/persalys-18-1-just-released/166 "2025-06-27T15:08:03Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![jschueller](https://yyz2.discourse-cdn.com/free1/user_avatar/persalys.discourse.group/jschueller/32/6_2.png) [@jschueller](https://persalys.discourse.group/u/jschueller)\
**Post date:** [June 27, 2025, 3:08pm UTC](https://persalys.discourse.group/t/persalys-18-1-just-released/166/1 "2025-06-27T15:08:03Z")

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Persalys 18.1 just released. You can request the new version by asking on [www.persalys.fr](http://www.persalys.fr)  
On the menu:

- Consistent metamodel error measures (MSE, R2)
- New CSV parser from OpenTURNS 1.25 allowing missing values, unicode chars
- Coupling model fixes
- Boost dependency is now optional (only required for nsis installer)
- Probabilistic model is now exported when creating a metamodel with FCE from a data model
- Various bug fixes

Thanks and cheers,  
The Persalys team