Mount Thor raises $45M across seed and Series A for Apple silicon compute

Mount Thor rents managed Apple-silicon machines to developers and AI researchers, offering fleets of macOS computers for testing, research and possibly model inference. Some computer-use agents must interact with macOS applications, which creates demand for real Mac environments. The $45 million combines a seed round and a Series A, so it should not be read as a single Series A. The company also raised separate hardware financing that was not disclosed and is excluded from the total.

Established Mac hosting providers and general cloud services already serve parts of this market. Mount Thor will need to show utilization, unit economics and secure isolation, while keeping physical hardware current. The business case depends on agent usage growing faster than the number of human developers.

For teams building agents that operate desktop software, the round signals that dedicated macOS compute is becoming a product category. Testing agents against real Apple environments may become a routine step in development.