Yes — GLM-5.3-Flash (320B-A18B) runs at 27 tok/s on M5 Max with 128 GB RAM using IQ3_XXS quantization via MLX. A capable open-source LLM with 320B-A18B parameters.
Want to run GLM-5.3-Flash faster — or step up to bigger models? Find your Mac →The LLMCheck index estimates GLM-5.3-Flash on M5 Max using our published methodology: Q4_K_M quantization, memory-bandwidth scaling, and cross-referenced third-party benchmarks where available. Figures are transparent estimates — own this config? Submit a real benchmark →
| Metric | Value |
|---|---|
| Tokens per second | 27 tok/s |
| Time to first token | — |
| Quantization | IQ3_XXS |
| Minimum RAM | 128 GB |
| Recommended engine | MLX |
| Parameters | 320B-A18B |
| Benchmark date | 2026-09 |
IQ3_XXS 320B-A18B MLX M5 Max
The recommended engine for GLM-5.3-Flash on M5 Max is MLX. Install with pip and pull the model:
Alternatively, you can use Ollama for a simpler setup:
| Chip | Speed | First Token | Min RAM | Engine |
|---|---|---|---|---|
| M5 Ultra | 35 tok/s | — | 256 GB | MLX |
| M3 Ultra | 25 tok/s | — | 256 GB | MLX |
To run GLM-5.3-Flash on M5 Max you need:
GLM-5.3-Flash needs about 128 GB of unified memory. These current Apple Silicon Macs have the headroom to run it comfortably:
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See how GLM-5.3-Flash stacks up against other models on your specific Mac hardware.
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