Mosek
Mosek ApS is a Danish software company that develops MOSEK, a mathematical optimization solver for linear, quadratic, conic, semidefinite, and mixed-integer programming, sold via commercial and OEM licenses to enterprises in financial services, energy, technology, and engineering, with a large free academic user base.
- Company typePrivate
- Founded1997
- HeadquartersCopenhagen, Denmark
- Headcount1–10
- GTM typeB2B
- OfferingSoftware
What Mosek does
Mosek ApS is a privately held Danish software company founded in 1997 by Erling D. Andersen and Knud D. Andersen, headquartered in Copenhagen's Symbion Science Park. The company develops and commercializes MOSEK, a mathematical optimization solver that addresses linear programming (LP), quadratic programming (QP), second-order cone programming (SOCP), semidefinite programming (SDP), and mixed-integer programming (MIP) problems using a state-of-the-art interior-point optimizer supplemented by simplex methods.
The product surface is structured around two API tiers: a high-level object-oriented Fusion API for Python, C++, Java, and .NET, and a lower-level Optimizer API available for C, Java, .NET, Python, Julia, Rust, and R. An OptServer add-on enables remote optimization execution with job scheduling. MOSEK is deeply integrated into the broader optimization ecosystem, serving as a backend solver for CVXPY, Pyomo, JuMP, GAMS, AMPL, YALMIP, CVX (MATLAB), PuLP, Mathematica, Drake, and Frontline Solvers. The current stable release is MOSEK 11.2.
Mosek monetizes through one-time commercial licenses with annual software maintenance, volume-based group licenses, OEM/ISV embedding royalties, and free academic licenses that serve as a developer-adoption funnel. Distribution occurs through direct sales, resellers, AWS Marketplace, and an integrator program. The named commercial customer base spans financial services (MSCI, Zurich Insurance Group), technology (Sony, Mitsubishi, MathWorks, Code Ocean), energy (EDF Renewables, Gridmatic, Plexos), automotive (Bridgestone), consulting (COWI), and transportation (Danske Statsbaner), while the academic footprint includes 97,992 active personal licenses and 202 institutional licenses at institutions such as MIT, Harvard, and Berkeley. The company operates with 1-10 employees and no external venture or private equity funding.
Mosek firmographics
Firmographics- Name
- Mosek
- Legal name
- Mosek ApS
- Website
- https://mosek.com
- Company type
- Private
- Founded year
- 1997
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- Mosek ApS is a Danish software company that develops MOSEK, a mathematical optimization solver for linear, quadratic, conic, semidefinite, and mixed-integer programming, sold via commercial and OEM licenses to enterprises in financial services, energy, technology, and engineering, with a large free academic user base.
- Ownership category
- akta.pro rank
Where Mosek is headquartered
LocationHeadquarters
- HQ city
- Copenhagen
- HQ country
- Denmark
- HQ region
- Europe
Offices1 record
Markets served
Mosek business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Technology or R&D, Personnel, Operations, Marketing or Sales, Infrastructure
Revenue model
- Commercial Software Licenses: Mosek sells commercial licenses for its optimization solver software. Pricing is publicly available on their website. The purchase process involves quote requests, purchase orders, and license activation.
- Software Maintenance: Annual software maintenance contracts provide updates, support, and access to new versions
- Group License: Volume licensing scheme for organizations requiring large-scale usage, offering flexibility without token server requirements
- OEM/ISV Licensing: Companies that integrate MOSEK into their own services or software sold to third parties can obtain OEM/ISV licenses
- Academic Licenses: Free academic licenses for students and professors at educational institutions
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| One time/ perpetual license | Annual | Commercial License |
| Freemium | Pay-as-you-go | Trial License |
| Freemium | Annual | Academic License |
| Subscription | Annual | Group License |
| Other | Annual | OEM/ISV License |
Go-to-market motion1 record
Distribution channels5 records
Marketing channels8 records
Mosek product offering
Product offeringCore offering
MOSEK is a commercial mathematical optimization solver that solves linear (LP), quadratic (QP), conic (SOCP), semidefinite (SDP), and mixed-integer (MIP) programming problems using state-of-the-art interior-point optimizers. The software is delivered through the MOSEK Fusion API (a high-level object-oriented modeling interface) and the MOSEK Optimizer API (a lower-level C-based interface) for integration into customer applications.
Product overview
MOSEK is a unified mathematical optimization software platform centered on its core solver engine. The main product is the MOSEK solver for linear, quadratic, conic, semidefinite, and mixed-integer programming. Users interact with the solver through two API layers: the Fusion API (object-oriented, available for Python, C++, Java, .NET) and the Optimizer API (lower-level C-based, available for C, Java, .NET, Python, Julia, Rust). The OptServer enables remote optimization execution. MOSEK offers specialized licensing tiers including free academic licenses, trial licenses, commercial licenses, group licenses for enterprise deployments, and OEM/ISV licensing for embedded integrations. The company provides extensive documentation, tutorials, and modeling cookbooks to support users across financial, energy, engineering, and academic sectors.
Differentiator
Problem solved
Functional benefit
Brands
- MOSEK: The company's primary optimization solver product for linear, quadratic, conic, and mixed-integer programming problems
- OptServer
- Fusion API
- Optimizer API
Products and services
- MOSEK Solver
Quantifiable outcome
- Robeco uses similar solver technology to optimize €12.5 billion in fixed income portfolios daily
Companies that use Mosek
Customer profileNamed customers19 records
Segments7 records
Ideal customer profiles5 records
Mosek technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Integration12 records
AI capability1 record
Feature5 records
Mosek partnerships and signals
Strategic signalPartnerships
Ten partnerships are on record, tiered core.
- CVXPYcoreThird-party Python interface for convex optimization. CVXPY is an open-source Python-embedded modeling language for convex optimization problems that uses MOSEK as a solver backend.
- PyomocorePython-based open-source optimization modeling language that can interface with MOSEK for solving optimization problems.
- JuMPcoreJulia-based optimization modeling language that provides MOSEK as one of its supported solvers for mathematical optimization.
- GAMScoreComprehensive optimization platform with MOSEK integrated as a solver option for various optimization problem types.
- AMPLcoreAlgebraic modeling language for optimization that supports MOSEK as a solver for linear, quadratic, and conic problems.
- YALMIPcoreMATLAB toolbox for rapid prototyping of optimization problems that integrates with MOSEK solver.
- CVX (MATLAB)coreMATLAB-based convex optimization modeling framework that supports MOSEK as a backend solver.
- PuLPcorePython library for linear and mixed-integer programming that can use MOSEK as a solver backend.
- MathematicacoreWolfram's technical computing platform that includes workflow support for MOSEK licensing and integration.
- AWS MarketplacecoreMOSEK available on AWS Marketplace for easy cloud deployment and licensing through Amazon Web Services.
Scale indicators4 records
Recent moves6 records
Expansion highlights5 records
Mosek competitors and assessment
Company assessmentEmerging players
- COIN-OR Foundation: COIN-OR hosts a family of open-source optimization solvers (CLP, Ipopt, Bonmin, Couenne, etc.) that provide free alternatives for many LP, MIP, and nonlinear problems, and serve as a price-umbrella competitor in MOSEK's core academic and lower-end commercial segments.
- Hexaly (formerly LocalSolver): Hexaly is a commercial solver focused on combinatorial and global optimization, addressing problems that overlap with MOSEK's MIP and QP workloads (scheduling, routing, allocation). It represents a newer commercial entrant in the same sales motion.
- Google OR-Tools: Google's open-source optimization suite covering routing, scheduling, LP, and MIP. While broader than a pure LP/QP/SOCP solver, OR-Tools competes for the same developer mindshare and is a credible (free) alternative for a meaningful slice of MOSEK's problem classes.
Broad incumbents
- Wolfram Research (Mathematica): Wolfram Mathematica includes built-in linear and nonlinear optimization solvers and integrates MOSEK as an external solver for harder problems. It overlaps MOSEK's mathematical-compute audience at universities and in research-led industries, and is also a channel partner (named MOSEK customer).
- FICO Xpress Optimization: FICO Xpress is a commercial optimization suite covering LP, MIP, and constraint programming with strong positioning in supply chain and financial services — directly comparable enterprise workloads to MOSEK's verticals, sold through FICO's broader analytics franchise.
- IBM ILOG CPLEX: IBM's CPLEX Optimization Studio is a long-established commercial solver for LP, QP, MIP, and CP, sold as part of IBM's broader analytics portfolio. It overlaps MOSEK's core problem classes and serves the same enterprise buyer, with the addition of IBM's wider data and AI tooling.
Direct peers
- LINDO Systems (LINGO / BARON): LINDO Systems offers LINGO for general LP/MIP and BARON for global (non-convex) optimization. BARON overlaps MOSEK's coverage of harder problem classes and is sold to the same enterprise / academic buyers, making it a comparable specialty solver vendor.
- Gurobi Optimization: Gurobi is the market-leading commercial mathematical optimization solver for LP, QP, and MIP, and is the primary direct competitor to MOSEK for enterprise optimization workloads in finance, logistics, and energy — the same verticals where MOSEK books revenue.
Others
- AMPL Optimization: AMPL is an algebraic modeling language for optimization that supports MOSEK alongside other solvers. It sits in the same optimization-software ecosystem, often co-evaluated with MOSEK in academic and enterprise modeling-stack purchases.
- GAMS (GAMS Development Corp.): GAMS is an algebraic modeling platform that integrates MOSEK as a solver option. As a modeling layer sitting above solvers like MOSEK, GAMS is both a partner and a peer in the optimization ecosystem, often evaluated alongside MOSEK in stack-selection decisions.
Market position
Strengths4 records
Weaknesses3 records
Competitive moat5 records
Key risks5 records
Key highlights7 records
Customer concentration
Mosek social profiles
Digital presenceMosek financial estimates
Financial estimateRevenue estimate
Valuation estimate
Mosek leadership team
Management profileNumber of profiles
Profiles2 records
Mosek funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Mosek M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Mosek
What does Mosek do?
MOSEK is a commercial mathematical optimization solver that solves linear (LP), quadratic (QP), conic (SOCP), semidefinite (SDP), and mixed-integer (MIP) programming problems using state-of-the-art interior-point optimizers. The software is delivered through the MOSEK Fusion API (a high-level object-oriented modeling interface) and the MOSEK Optimizer API (a lower-level C-based interface) for integration into customer applications.
Is Mosek a public or private company?
Mosek is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Mosek founded?
Mosek was founded in 1997. It employs 1 to 10 people.
Where is Mosek based?
Mosek is headquartered in Copenhagen, Denmark, in the Europe region.
How does Mosek make money?
Five revenue lines are on record. Commercial Software Licenses are the primary driver. The others are software Maintenance, group License, OEM/ISV Licensing and academic Licenses.
Who are Mosek's main competitors?
Emerging players on record are COIN-OR Foundation, Hexaly (formerly LocalSolver) and Google OR-Tools. Broad incumbents are Wolfram Research (Mathematica), FICO Xpress Optimization and IBM ILOG CPLEX. Direct peers are LINDO Systems (LINGO / BARON) and Gurobi Optimization. Others are AMPL Optimization and GAMS (GAMS Development Corp.).
Does Mosek have an API?
Yes. MOSEK provides multiple API interfaces: Fusion API (object-oriented, available for Python, C++, Java, .NET) and Optimizer API (lower-level, available for C, Java, .NET, Python, Julia, Rust). Additionally provides interfaces for MATLAB, R, and command line tools. The OptServer enables remote execution of optimization tasks. Developer documentation is at docs.mosek.com/latest/capi/index.html.