Redesigned design optimization API
Design optimization has been restructured with a cleaner API for configuring models, parameters, experiments, and objectives. A new strict schema enforces valid configurations and enables automatic frontend form generation, making it easier to set up and validate optimization runs.Find out more →Voltage components plot
A new voltage components plot lets you visualize the individual contributions to cell voltage — such as open-circuit voltage, ohmic losses, and reaction overpotentials — for deeper insight into cell behavior during simulations.Studio
Studio
Fixes
- Fixed cells from other projects appearing in cell selection lists.
- Empty simulation data now correctly shows a failed status instead of a blank result.
Pipeline
Pipeline
Fixes
- Fixed reaction overpotential (eta_r) calculation bug.
Comprehensive data management
Studio now provides a full data management experience for cell specifications, cell instances, and measurements. You can define cell specs, track individual cell instances, and associate measurements — all from a redesigned UI with streamlined navigation.Find out more →Silicon design optimization
The pipeline now supports silicon-based electrode design optimization, including cell mass calculations. This enables end-to-end design studies for cells with silicon anodes.UCP solution save and load
Protocol simulation results can now be saved to disk and reloaded later with lazy variable evaluation. This makes it practical to work with large simulation outputs without keeping everything in memory.Find out more →Pipeline
Pipeline
Fixes
- Fixed a bug where some calculation results were not correctly parsed back into the data.
- Improved error handling for MSMR fits so numerical issues surface clearly instead of failing silently.
- Cleaned up solver output for a clearer log during fits.
EIS simulations
EIS (Electrochemical Impedance Spectroscopy) simulations now work out of the box — default double-layer capacity parameters are automatically included so you no longer need to manually specify them.Find out more →Child job status visibility
Pipeline and optimization pages now display the status of individual child jobs, making it easy to monitor progress and identify which steps have completed or failed.Saved validation plot configuration
Validation plot settings are now persisted, so you no longer need to reconfigure plots each time you revisit a validation result. This also avoids unnecessary recomputation.Studio
Studio
Fixes
- Fixed authentication configuration and error handling; improved metric display.
- Fixed datafit parameter bounds format (now uses
[lower, upper]). - Fixed model selection in optimization, charge time display, and cycler protocol metrics.
Pipeline
Pipeline
Improvements
- OCP data loading now gracefully ignores steps instead of erroring.
- Added support for converting fitted costs back into their configuration.
- Added current to the lumped SPMR model.
- Fixed a bug with custom parameters in pipeline evaluation.
Protocol Simulator
Protocol Simulator
Fixes
- Fixed step label casing to match standard naming conventions.
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 →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.Studio
Studio
Fixes
- Fixed batch payload format for nested dictionaries.
- Fixed pipeline data fit element fetching.
Pipeline
Pipeline
Improvements
- Penalties and constraints refactored to use PyBaMM expressions for greater flexibility.
- SciPy DifferentialEvolution optimizer now supports parallelization.
- 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.
Live pipeline loading
Pipeline pages now load progressively — only the next pending element is fetched at a time, with live updates as elements complete. This makes working with long pipelines much more responsive.Simpler simulation API
The simulation API has been simplified from a two-step process to a single step. UCP input parameters are also now supported directly in simulation protocols, making it easier to configure and run simulations.Find out more →Current variable support in pipeline
Pipeline objectives now support current as a variable, expanding the set of quantities that can be used in fitting and optimization workflows.Studio
Studio
Improvements
- Data loading on optimization pages improved with proper cleanup on navigation.
- Job compute time is now logged for performance monitoring.
- Renamed “model” to “parameterized model” and “equations” to “model” for clarity.
- Fixed optimization v1 data conversion error that caused the optimization list to appear empty.
- Fixed design optimization bugs.
- Fixed pipeline multistart plots consistency.
Pipeline
Pipeline
Improvements
- Reverse parser now handles design objectives and metrics.
- DesignObjective updated to use a metric dictionary format.
- Sensitivity analysis improvements: fixed second-order calculation and added log-transform support.
- Initial guess distributions (Log, Uniform) added for simpler configuration.
- Simulation objectives can now expose additional output variables.
- Multiple statistics supported in validation reports.
- Initial voltage can now be inferred from the measurement data when evaluating custom parameters.
- Parameter dependencies made optional for simpler objective definitions.
- Fixed a validation issue with objective inputs.
- Fixed symbol evaluation in MSMR models.
- Fixed time_series and steps key validation.
Simpler data API
The data handling API has been simplified with improved validation, making it easier to upload and work with experimental data. Custom fields are now supported via an additional data column, so you can attach arbitrary metadata to your measurements.Find out more →Faster loading for large results
Large results (such as simulation solutions and pipeline results) now load faster, with improved page load times and reduced memory pressure when working with large datasets.Sobol sensitivity analysis
The pipeline now supports Sobol-based sensitivity analysis, enabling global sensitivity studies that quantify how each parameter contributes to output variance — including second-order interaction effects.Studio
Studio
Improvements
- Pipeline elements now use a more memory-efficient internal representation, reducing memory usage.
- Optimization v2 refactored for a more consistent workflow.
- Fixed a bug where initial conditions that violate events caused errors.
- Fixed user permissions at the organization level.
- Fixed a frontend race condition when navigating between projects.
Pipeline
Pipeline
Improvements
- ECM and lumped models are now compatible with the pipeline.
- Interpolant numerical stability improved using smooth-step functions.
- Optimiser architecture refactored for improved performance and scalability.
- Fixed entry/create serialization issues.
- Fixed experiment parsing.
- Fixed a bug with non-parametric inputs to the MSMR objective.
- Improved interpolant error messages and numerical stability.
Create model from pipeline
You can now create a model directly from a pipeline, opening the model creator pre-filled with the pipeline’s parameters in read-only mode. This streamlines the workflow from fitting to simulation.Find out more →Reusable data grid across Studio
All tables in Studio now share a consistent browsing experience with built-in search, filtering, and configurable columns.ECM with arbitrary RC pairs
The pipeline now supports equivalent circuit models with an arbitrary number of RC pairs, integrated with the lumped single electrode SPMR. This enables more flexible impedance-based modeling.Studio
Studio
Improvements
- Pipeline UI improvements — “New” tag for outputs, calculation metadata display, and smoother API requests.
- Added pipeline attributes: name, description, and project association.
- Copy parameters and view config details in pipelines.
- Added pipeline created-by info showing creator email.
- Organization creation and invitation for admin users.
- Added documentation button with updated docs links.
- Fixed Maccor protocol C-rate capacity termination.
- Fixed query for existing users by email.
- Fixed minor admin page bugs.
- Fixed pipeline parameter output display — filter constants and fix nested function parameters.
Pipeline
Pipeline
Improvements
- Added support for parsing custom models.
- Updated for PyBaMM 25.10 — composite electrodes and EIS handling.
- Improved handling of nested function parameters during parameter cleanup.
- Fixed a bug affecting initial-SOC-from-voltage calculations.
- Fixed source generation for nested function parameters.
- Fixed calculation input/output parameter names.
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 →Studio
Studio
Improvements
- Added MSMR validation plots for pipelines from the API.
- Improved data fit UI with loading state and timeout handling.
- Fixed error handling for model creation with duplicated names.
Pipeline
Pipeline
Improvements
- Added design objective custom parameters for evaluating by SOC or concentration.
- Added SOC-based initialization for lumped SPM using voltage.
- Allow additional arguments in data fit for cost logging and initial guess override.
- Improved MSMR diffusion tolerance handling in low dUdx regions.
- Improved optimizer performance and parallel execution during data fitting.
Activity log
Studio now tracks optimization and data fit usage in a new activity log, giving teams visibility into how resources are being used across the organization.Interactive protocol visualization
Protocols can now be visualized as interactive graphs, making it easier to understand complex multi-step protocols at a glance.MSMR validation framework
Introduced an MSMR OCP validation framework, enabling validation plots to be rendered directly in Studio.Studio
Studio
Improvements
- Updated data fit UI with parameter progress plots in an accordion and a smoother loading experience.
- Added UCP time series upsampling with linear interpolation.
- Adaptive time steps for UCP simulations to prevent timeout issues.
- Improved error messages in pipelines with more detailed error handling.
- Improved checkpoint serialization for numerical results.
- Fixed simulations not rerunning when the cached job had failed.
- Fixed EIS step causing all subsequent Time values to be NaN.
- Fixed parameterization validation plot and various UI issues.
- Fixed duplicate time value handling using new PyBaMM solvers.
Pipeline
Pipeline
Improvements
- Refactored validation so objectives own their validations.
- Improved reporting of the best fit result to Studio.
- Added standardized parameter and field naming.
- Added HighSide/LowSide constraint metrics and Maximum aggregation.
- Generalized the multi-step fast charge example.
- Fixed sign errors in SingleElectrodeLumpedSPMR.
- Changed lumped SPMR sign convention to be more intuitive.
Charge optimization UI
A new dedicated UI for charge optimization makes it easy to configure, launch, and monitor optimization runs. The interface includes improved logging, real-time metric extraction, and clearer result display.Find out more →Studio
Studio
Fixes
- Fixed a bug that caused job updates to be ignored.
Pipeline
Pipeline
Fixes
- Fixed design notebook compatibility with normalized parameter changes.