Classiq
Quantum computing software platform - compiler, IDE and OS
103 employees · est. 2020 · Israel
Horizon Quantum
Code, compile and deploy quantum applications from classical languages.
40 employees · est. 2018 · Singapore, Singapore
Horizon Quantum is the older company (2020 vs 2018); Classiq is the larger of the two.
Side-by-Side Comparison
| Metric | Classiq | Horizon Quantum |
|---|---|---|
| Founded | ||
| Founded | 2020 | 2018 older |
| Headquarters | ||
| Headquarters | Israel | Singapore, Singapore |
| Employees | ||
| Employees | 103 larger | 40 |
| Industry | ||
| Industry | IT, Information Technology, Quantum | Hardware, IT, Quantum |
| Funding Stage | ||
| Funding Stage | Unknown | Series A |
| Total Funding | ||
| Total Funding | $201.75M | $21.60M |
| Funding Rounds | ||
| Funding Rounds | 8 | 3 |
| Services | ||
| Services | Design, optimization, and execution of quantum algorithms, Quantum circuit synthesis, Algorithm benchmarking and analysis, Quantum application development software | Development of tools for programming and accelerating code for quantum computers, Integrated Development Environment (IDE) for quantum programming |
| Target Customers | ||
| Target Customers | Finance Industry, Chemical & Pharmaceutical Industries, Healthcare, Manufacturing, Logistics, Cybersecurity, Automotive Industry, Aerospace & Defense, Academic Researchers, Educational Institutions | Developers interested in quantum computing, Quantum physicists, Researchers in quantum computing, Technology enthusiasts |
| Taxonomy | ||
| Taxonomy | Quantum Computing, Quantum Software, Quantum Algorithms, Integrated Development Environment (IDE), Quantum Circuit Synthesis, Qubit Optimization, Quantum Cloud Computing, High Performance Computing (HPC), Low-Code Development, Quantum Computer Integration, Quantum Operating System, Automated Quantum Programming, Quantum Simulation, Classical And Quantum Computing Integration, Engineering And Design Automation | Quantum Computing, Quantum Algorithms, Secure Quantum Computing, Programming Tools, Compilers, Quantum Computers, Quantum Information Processing, Quantum Software |
| Website | ||
| Website | classiq.io | horizonquantum.com |
About Classiq
Classiq, founded in 2020, is an innovative player in the IT, Information Technology, and Quantum sectors, headquartered in Israel. With its slogan, "Quantum computing software platform - compiler, IDE and OS," Classiq is pushing boundaries by integrating deep quantum expertise with traditional semic...
About Horizon Quantum
Horizon Quantum, a Singapore-based startup founded in 2018, aims to revolutionize quantum computing with its pioneering approach. The company's slogan, "Code, compile and deploy quantum applications from classical languages," encapsulates its mission to enable users to write programs in classical la...
We will tell you when either one moves
BounceWatch watches Classiq and Horizon Quantum for new funding, fast hiring, new executives and a change of software vendor. When one happens, we email you the same day.
Funding, hiring, leadership and stack changes at Classiq and Horizon Quantum — by email.
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Compiled from the BounceWatch company index. We last looked at Classiq on 14 Nov 2025, and Horizon Quantum on 11 Jun 2025. Where a field is blank here, it means we have not recorded it — not that the answer is zero. How we source and date this.