Release notes

Time

Content

February 2026

Solver SDK V2.3.0 is released:

• Migrated to a new algorithm architecture to improve performance and scalability.

• Added MISOCP (Mixed-Integer Second-Order Cone Programming) solver module.

• Improved MPS/LP I/O performance to speed up model loading and writing.

• Optimized IPM and PDHG algorithm performance.

• Added solution pool to PowerMILP for retrieving multiple solutions.

• Added cvxpy modeling language integration.

August 2025

Solver SDK V2.2.0 is released:

• Added GPU-accelerated Primal-Dual Method (PDM) algorithm.

• Added six PDM control parameters and three MIP heuristic tuning parameters.

• Added PowerMILP module, enabled by default in most scenarios.

• Added multi-objective optimization and multi-objective MPS file I/O.

• Added feasibility relaxation (feasrelax) with related interfaces and examples.

May 2025

Solver SDK V2.1.2 is released:

• Added error messages for floating license validation failures (40x errors).

• Improved Python SDK installation experience.

• Optimized data masking performance.

April 2025

Solver SDK V2.1.1 is released:

• Optimized `select` performance in Python SDK TupleDict.

• Added more detailed banner information, including commit hash, build time, and platform.

• Added Python SDK function completion for VSCode, PyCharm, and other IDEs.

• Fixed known algorithm issues.

• Fixed floating license release issues.

February 2025

Solver SDK V2.1.0 is released:

• Added a Community Edition (CE) license. The pip package no longer includes a built-in license.

• Added cluster solving authorization for multi-machine computing.

• Added Python 3.12 and 3.13 support. Dropped Python 3.6 and 3.7.

• Added the IPM/NumericFocus parameter. Modified the NumericFocus, EnableStochasticLP, and PostScaling parameters.

November 2024

Solver SDK V2.0 is released:

• Added MATLAB SDK with documentation and examples.

• Added modeling support for Quadratically Constrained Programming (QCP), Mixed-Integer Quadratic Programming (MIQP), and Mixed-Integer Quadratically Constrained Programming (MIQCP).

• Added the MIP/EnableLazyConstr and NumericFocus parameters. Removed the MIP/NumericFocus parameter.

July 2024

Solver SDK V1.3 is released:

• Added the MIP/NumericFocus parameter to control the level of attention to numerical precision for MIP problems.

• Added Java and C# SDK code examples.

• Improved algorithm performance and fixed bugs.

May 2024

Solver SDK V1.2.1 is released:

• Added the OutputFlag, LogToConsole, and LogFile parameters to control log output.

• Fixed excessive iterations when solving some QP problems.

April 2024

• Paid solver subscription launched for online and offline environments. Purchase >>. Pricing and billing.

• Solver SDK V1.2.0 is released (Download V1.2.0): Added the PostScaling parameter and tuned MILP performance.

January 2024

Solver SDK V1.1.x is released (Download V1.1.1):

• Improved the performance of MILP and QP algorithms.

• Added five tunable MILP parameters. Added the SolutionNumber parameter to obtain multiple sub-optimal solutions in MIP solving.

• Added C# API, documentation, and examples. Supports calling MindOpt from Julia using JuMP and AmplNLWriter.jl.

October 2023

Solver SDK V1.0.x is released (Download V1.0.1):

• Brand new MindOpt SDK API and corresponding code examples. Not compatible with V0.x interfaces.

• Added warm start, Special Ordered Set (SOS) constraints, and indicator constraints for MILP. Added a callback function feature. Added support for the .qps input file format. Provides a primal-dual feasible solution for linear programming problems.

• Improved the algorithm flow of the concurrent optimization method.

• Comprehensively improved algorithm performance and fixed bugs.

October 2023

New feature (Free Edition) is launched: MindOpt Copilot AI Engineer. An LLM-based optimization chatbot that communicates business problems through text chat and spreadsheet files to automatically generate mathematical modeling formulas and code, call software to run and solve problems, and interpret results.

August 2023

Solver SDK V0.25.x is released (Download V0.25.1):

• Improved the performance of the interior point method.

• Improved MILP performance and added several configurable integer parameters.

• Added the MILP Irreducible Inconsistent Subsystem (IIS) algorithm. Improved IIS stability, attribute retrieval, and error correction.

April 2023

New feature (Free Edition) is launched: MindOpt Tuner Parameter Tuner. Tunes solver hyperparameters to improve solving speed and optimizer GAP.

March 2023

Solver SDK V0.24.x is released (Download V0.24.1):

• Improved MILP solver performance. Official release: all cloud accounts now have full access. No special license required. Access is being rolled out automatically. Contact us if your access is not yet active.

• Improved concurrent optimization performance and redesigned IPM Cholesky factorization.

• Added command-line data masking for secure external data testing. Data masking.

• Added installation packages for Linux ARM and Apple silicon.

• Added the pip install mindoptpy installation method.

February 2023

New feature (Free Edition) is launched: A new version of MindOpt APL Modeling Language is launched. An algebraic modeling language for unified mathematical model expression with easy solver switching.

November 2022

Solver SDK V0.23.x is released (Download V0.23.1):

• Added Semidefinite Programming (SDP) APIs and dat-s file format support.

• Fixed MILP bugs and optimized performance.

• Added an LP installation package for Apple silicon.

August 2022

Solver SDK V0.20.x is released (Download V0.20.2):

• Added branch-and-cut solver for MILP problems. Limited test licenses available — apply by email.

• Simplified installation package.

• Optimized license validation. Problems with fewer than 300 variables and 300 constraints no longer require a license file (mindopt.lic or fl_client.ini).

May 2022

Solver SDK V0.19.x is released (Download V0.19.0):

• Added convex QP support for NLP.

• Improved simplex and interior point method performance. Enhanced AMPL features and stability and concurrent method stability.

• Redesigned license management. Added createEnv API for high-concurrency, low-latency scenarios.

November 2021

Solver SDK V0.15.x is released (Download V0.15.1):

• Added network flow and multi-threaded simplex methods. Improved simplex and interior point stability. Updated data reading module and APIs.

• The network flow method achieved strong results in the Large Network-LP Benchmark (benchmark details).

September 2021

Optimization Solver entered public preview. SDK V0.14.0 (Download V0.14.0) with LP support. New users: start with the Quick Start (Activation and usage) guide.