> ## 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.

# 2026 01 19

<Update label="January 19, 2026" description="Custom model uploads, improved data UI, and project member management">
  ## Custom model uploads

  You can now upload custom PyBaMM models to Studio as serialized JSON. This lets you use your own model definitions in simulations and optimizations without being limited to the built-in model library.

  [Find out more →](/build/models)

  ## Improved data visualization

  The data UI has been redesigned with improved downsampling for faster initial rendering, automatic upsampling when you zoom in for full-resolution detail, and a larger plot layout for better readability.

  [Find out more →](/data/visualizing)

  ## Project member management

  Projects now support member management with dedicated roles and permissions. Organization admins can add and remove project members and assign roles through new CRUD operations.

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

      * Added the LumpedSPMeR model with electrolyte dynamics.
      * Added an auth continuation page to prevent email security scanners from consuming login tokens.
      * Updated optimization documentation.

      **Fixes**

      * Fixed lumped thermal models with the correct temperature variable and improved error messages.
      * Fixed user list to only show organization members, even for superadmins.
    </Accordion>

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

      * Extended default optimization run limits for longer optimization runs.
      * Added a new data loading mode.
      * Added lumped SPMeR model with electrolyte dynamics.
    </Accordion>

    <Accordion title="Python API">
      **Improvements**

      * Added CI for running example notebooks.
      * Proof-of-concept support for fetching pipelines from the API.
      * Improved error handling during pipeline creation.
    </Accordion>

    <Accordion title="Protocol Simulator">
      **Improvements**

      * Added Hermite interpolation for smoother solution evaluation.
    </Accordion>
  </AccordionGroup>
</Update>