Quantized weights of Qwen3-4B in the native.brasa format of Brasa, a local inference engine for Apple Silicon written in Rust on Metal. Brasa serves an OpenAI- and Anthropic-compatible API on your Mac and is built mainly to run coding agents (Claude Code, Codex, Cline, OpenCode) against a local model. These files only work with Brasa. They are not GGUF, MLX or safetensors. Each variant is a folder that Brasa loads as one model (model.brasa + the Qwen3 tokenizer): - q40: blocks of 32 weights along the input dimension, an f16 scale and 16 bytes of nibbles (4.5 bits per weight), w = d · (q − 8). - q60: blocks of 32, an f16 scale and 6-bit values (6.5 bits per weight), w = d · (q − 32). - q80…