fmx is a command-line interface for Apple's on-device Foundation Model, providing chat, response, and schema generation capabilities directly on macOS. It is designed for developers who want to leverage local LLM inference without cloud dependencies.
In the CLI tools & terminal space, fmx takes a focused approach. It allows developers to interact with Apple's on-device Foundation Model for chat and schema tasks via the command line. It is built as an open-source project for developers. fmx is open source under the MIT license. It runs on the command line.
fmx first shipped in 2026. PulseGate's similarity index finds few close equivalents — fmx occupies a relatively distinct niche. Key capabilities include chat interface, on-device inference, and schema generation.
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