Release notes: July 2026

This recap summarizes product changes released during July 2026, grouped by product theme.

Highlights by theme

Agentic modeling

Jinkō Skills are now available!

Automate your modeling steps.

• Skills are a way to turn Jinkō's modeling procedures into ready-made workflows that AI agents can actually run on their own, without anyone clicking through steps manually.

Skill	Purpose
jinko	Orchestrate end-to-end Jinkō modeling workflows across the published skill set.
jinko-calibration-cmaes	Create, run, poll, and inspect CMA-ES calibrations through the SDK.
jinko-context	Core Jinkō concepts, navigation, and domain terminology.
jinko-data-table	Create or inspect data tables for overlays and calibration.
jinko-document	Create or update Jinkō documents from markdown through the SDK.
jinko-model	Build, edit, sanity-check, and debug Jinkō computational models.
jinko-output-set	Create, inspect, validate, and edit simple and advanced output sets through the SDK.
jinko-protocol	Design or edit multi-arm protocol designs.
jinko-sdk-setup	Authenticate and configure access to a Jinkō project.
jinko-solution-and-product-guide	Guidance on Jinkō solutions and product features.
jinko-trial	Set up, sanity-check, run, poll, and download in silico trial results.
jinko-trial-viz	Create, inspect, sanity-check, and retrieve Jinkō trial visualizations.
jinko-vpop	Create, generate, and inspect virtual populations.

Find Jinkō Skills on OpenAI

A number of Jinkō skills are now available on OpenAI.

In chatGPT:

• go to plugins, and search for Jinkō
• Install Jinkō - Run in silico clinical trials
• Harness the power of agentic modeling with Jinkō!

Jinkō skills are now available in OpenAI.

• Coming soon on Anthropic's Claude Science!

Kōhai

• The Kōhai icon now appears throughout Jinkō wherever AI assistance is available.

• Kōhai now uses OpenAI GPT-5.6 models instead of GPT-5.4 and GPT-5.5 models.

• Kōhai now has experimental support for jinko-skills, including jk-context and jk-solution-and-product-guide.

Modeling

• Protected model tags no longer display a lock icon, providing a cleaner interface.

• The “Stop solver” event setting is now a switch instead of a dropdown, making it easier to understand and change without changing the underlying model values.

• Computational Model tables can now be sorted alphabetically by the Name column.

• Components tagged with output are now selected automatically in the Simple Solve output selection.

• Model tags have been simplified and renamed. The available tags are:
  • Input tags (mutually exclusive):
    • i::vpop, replacing input::PDU, input::PDK, and input::PDPK with backward compatibility.
    • i::protocol, replacing input::PS with backward compatibility.
  • Source tags (mutually exclusive):
    • s::to-calibrate
    • s::calibrated
    • s::knowledge
    • s::arbitrary
  • Other tags (not mutually exclusive):
    • output, for variables to include in output time series and the Results (Quick Solve) tab by default.
    • algebraic, which marks a variable as the unknown in an AlgebraicRule when needed for under-determined models.

• When adding a Computational Model from the project item selection dialog, you can now upload a model file directly instead of selecting an existing model.

• The Simple Solve item selector now uses a plus icon when adding a new item.

• Computational Model renderers are available again.

• You can now navigate between Computational Model graph components while in full-screen mode.

• Toggle controls now have clearer borders and better contrast for disabled options, making each choice easier to distinguish.

• The Customize columns action now uses an icon for a more compact interface.

Trial, simulation & viz

• Trial Visualization now clearly indicates that it's the first five arms that are shown by default in time-series views. You can still change the arm selection at any time.

• Time conversion guidance now includes the relationship between:
  • one year and the number of days;
  • one month and the number of days.

• Patient counts in aggregated time-series plots are now accurate for trials with more than 1,000 virtual patients.

• Time-series plots now use the selected x-axis minimum and maximum after you select Update plots, making it easier to focus on a specific time window.

• Users with the Viewer role can now view Trial Visualization without receiving access errors.

• Waterfall plots now remain available after you change the visualization context.

• Simple output sets can now be uploaded from your computer as .json files.

• Trial Visualization now displays plots without errors when no arms are selected, including when a protocol arm is inactive.

Data & Calibration

• Scoring bounds now support scientific notation. Values with an absolute value of at least 1e7 are displayed using scientific notation.

• Trial and Calibration version cards now show whether an operation is Running, Stopped, or Completed.

• Plots now resize correctly when the browser window changes size.

• You can now insert rows between existing rows in data tables.

• Data tables are now editable. You can edit cell contents, append rows, and delete rows.

• The Data Table Fitness Function tab can now plot data-table values and their bounds, when provided.

Virtual Population

• Subsampling Design has been redesigned to make targets easier to define and review in a tabular view.

• VPop stabilization on large trials now uses substantially less memory, reducing the risk of stabilization jobs running out of memory.

• Creating a VPop from a VPop Design now shows the most important options first, with advanced settings grouped under a collapsible Advanced options section.

• When uploading a VPop or VPop Design file, the name field is now filled automatically with the filename.

• You can now combine descriptors and correlations from two VPop Designs.

• • SkewNormal sample generation has been corrected to improve sampling accuracy.

• Subsampling Design is now working steadily when adding a time-of-x scalar output as a target.

Organization & project management

• The User Settings page has been redesigned.

• Navigation from a connected organization to an item in Personal Space now works correctly.

Documentation & Knowledge

• Reference and document toolbars now use updated icons for their actions.

• Document toolbar actions that do not fit on smaller screens are now available from a More menu.

• Typos in the IchM15 document template have been corrected.

Other

• Personal invitations are no longer available from the user profile page.

• Plot color palettes can now be shared across users, and you can define a palette at the user level. Three palettes are available.