> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ionworks.com/llms.txt
> Use this file to discover all available pages before exploring further.

# 2025 11 24

<Update label="November 24, 2025" description="Models management, data fit performance, and parallel DifferentialEvolution">
  ## Models management

  Studio now has dedicated pages for managing models — browse a list of available models, view model details, and create new models. Parameterized model details are also viewable from the model pages.

  [Find out more →](/build/models)

  ## Data fit performance improvements

  The data fit UI is now significantly more responsive. React memoization and element collapsing prevent unnecessary re-renders, and payload sizes have been reduced for batch job updates.

  <AccordionGroup>
    <Accordion title="Studio">
      **Fixes**

      * Fixed batch payload format for nested dictionaries.
      * Fixed pipeline data fit element fetching.
    </Accordion>

    <Accordion title="Pipeline">
      **Improvements**

      * Penalties and constraints refactored to use PyBaMM expressions for greater flexibility.
      * SciPy DifferentialEvolution optimizer now supports parallelization.

      **Fixes**

      * Fixed MSMR validation plot range clipping and a type-conversion bug with large integers.
      * Fixed bugs with lumped model and ECM compatibility.
      * Fixed parameter reverse-parsing.
    </Accordion>
  </AccordionGroup>
</Update>