Best AI Models for Mac Studio M5 Max (48 GB)

Yes. The Mac Studio M5 Max (48 GB) with 48 GB unified memory can run Qwen3.8 27B (Q4_K_M, 17.9 GB, 40% of memory). It is also the table's best pick, at ~24.7 tok/s. 205 of the 335 featured models get a Fit of S (runs great) here. The largest featured model that fits at Q4 or better is Qwen3 Next 80B A3B Instruct (81.3B at IQ4_XS). 120B-class models need about 77 GB at Q4_K_M, so only Q2 (with a quality loss) or CPU offload gets them running in 44.5 GB. Check the compatibility table above for the full list with Fit, VRAM usage and estimated speed. Models are checked against the 44.5 GB available to AI (that is, the 48 GB of RAM minus roughly 3.5 GB for macOS), while Apple Silicon's unified memory allows the GPU to draw from that same pool without copying data.

The Mac Studio M5 Max (48 GB) has 48 GB unified memory. After macOS reserves ~3.5 GB for the operating system, approximately 44.5 GB is available for AI models. Model rankings here use that 44.5 GB limit instead of the total 48 GB. Unlike discrete GPUs where VRAM is separate from system RAM, a unified-memory device shares one memory pool between the CPU and GPU — this means no data copying overhead, but you share memory with macOS and open apps.

With 48 GB unified memory and 614.0 GB/s bandwidth, the Mac Studio M5 Max (48 GB) is excellent for running local AI models. Models that run well include Qwen3.6 35B A3B (36.0B at Q4_K_M, ~67.8 tok/s); Gemma 4 26B A4B IT (25.8B at Q4_K_M, ~80.7 tok/s); NVIDIA Nemotron 3.5 Lightning 30B A3B BF16 (31.6B at Q4_K_M, ~72.7 tok/s). This is a premium configuration, with room for large models at good quality and most smaller ones at maximum quality.

For the Mac Studio M5 Max (48 GB), the best pick right now is Qwen3.8 27B at ~24.7 tok/s. Also running well: Qwen3.6 35B A3B (36.0B at Q4_K_M, ~67.8 tok/s); Gemma 4 26B A4B IT (25.8B at Q4_K_M, ~80.7 tok/s); NVIDIA Nemotron 3.5 Lightning 30B A3B BF16 (31.6B at Q4_K_M, ~72.7 tok/s). The best choice depends on your use case: coding assistants benefit from code-tuned models, general chat from instruction-tuned ones. The list is ranked by quality, recency and Fit.

With 614.0 GB/s memory bandwidth, the Mac Studio M5 Max (48 GB) achieves approximately 96 tok/s on a 7B model at Q4_K_M — that's very fast, well above conversational speed. A 14B model runs at ~48 tok/s. In the ranking, the top pick Qwen3.8 27B runs at ~24.7 tok/s. Apple Silicon achieves high efficiency (~70%) thanks to unified memory — there's no PCIe bottleneck between CPU and GPU.

Yes — once you download a model, it runs entirely on the Mac Studio M5 Max (48 GB) without internet. Applications like Ollama and LM Studio make it straightforward to download, manage, and run models locally. All your conversations stay private on your device with zero data sent to external servers. This is one of the key advantages of local AI: complete privacy, no API costs, and no rate limits.