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October 27, 2025
Multi-dimensional interpolant editor, 2D data upload, and piecewise interpolation

Multi-dimensional interpolant editor

The parameter interpolant editor now supports multi-dimensional x values, making it possible to view and edit parameters that depend on more than one variable — such as temperature and SOC — directly in Studio.Find out more →

2D interpolant data upload

Users can now upload 2D interpolant data, with the backend automatically interpolating to a regular grid. This simplifies working with experimentally measured parameter surfaces.Find out more →

Piecewise interpolation

The pipeline adds piecewise interpolation with both 1D and 2D support, giving more flexibility when fitting parameters with distinct regions of behavior.Find out more →
Improvements
  • Added MSMR validation plots for pipelines from the API.
  • Improved data fit UI with loading state and timeout handling.
Fixes
  • Fixed error handling for model creation with duplicated names.
Improvements
  • Added design objective custom parameters for evaluating by SOC or concentration.
  • Added initial_concentration_from_soc for SOC-based initialization.
  • Added initialization for lumped SPM with SOC calculation from voltage.
  • Allow additional arguments in data fit for cost logger and initial guess override.
  • MSMR diffusion dUdx tolerance — clip diffusivity in low dUdx regions.
  • Refactored Pints optimizers with lighter wrappers and parallel functionality.
  • Removed Identity as the default transform in the parameter parser.