July 30th, 2026
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Timefold Solver 2.4.0

More Solvery goodness! This time, we have spent a lot of our energy on the service module and on our documentation, especially regarding how solver services work. But we haven't forgotten about the solver either, bringing the usual fixes and performance improvements.

Changelog

🚀 Features

  • Add validation errors warnings to planning events (#2502)
  • Enable automated code formatting for models (#2517)
  • Enhance the visualization metadata (#2510)
  • Add logging for effective map location (#2481)
  • Add nullable to model config params (#2452)

🐛 Fixes

  • Report BigDecimal as number schema type in model descriptor (#2508)
  • Validate application version (#2500)
  • Make sure test outputs for models are visible in the console (#2494)
  • Fail fast on planning list variable sources (#2469)
  • Mark iterator map as fresh on refresh

🔄️ Changes

  • Improve performance of ConnectedRange collector
  • Improve filtered joins (#2461)

Contributors

We'd like to thank the following people for their contributions:

  • Christopher Chianelli (@Christopher-Chianelli )
  • Diogo Ferreira (@diogodanielsoaresferreira )
  • Jenne De Bleser (@jennedebleser)
  • Jurriaan Persyn (@oemebamo)
  • Lukáš Petrovický (@triceo)
  • Matt Van Horn (@mvanhorn)
  • Radovan Synek (@rsynek )
  • Tom Cools (@TomCools )
  • fodzal (@fodzal)
  • lee-carlon (@lee-carlon )

Timefold Solver Community Edition is an open source project, and you are more than welcome to contribute as well! For more, see Contributing.

Timefold also offers commercial editions of the solver, which include additional features such as explainability, the ability to scale out to the biggest datasets, and enterprise-grade support. Find out more about the different editions.

How to use Timefold Solver

To see Timefold Solver in action, check out the quickstarts.

With Maven or Gradle, add the ai.timefold.solver : timefold-solver-core : 2.4.0 dependency in your pom.xml to get started.

You can also import the Timefold Solver Bom (ai.timefold.solver : timefold-solver-bom : 2.4.0) to avoid duplicating version numbers when adding other Timefold Solver dependencies later on.

Additional notes

The changelog and the list of contributors above are automatically generated. It excludes contributions to certain areas of the repository, such as CI and build automation. This is done for the sake of brevity and to make the user-facing changes stand out more.

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Timefold

Timefold is an AI planning optimization platform, built on powerful open-source solver technology, enabling software builders to tackle real-world, complex and high-impact operational planning problems. It delivers significant economic value in optimization operations like extended VRP, maintenance scheduling, field service routing, task sequencing, etc.

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