Can I Run GLM-5 / GLM-5.1 on Apple M3 Max?
Written by Jakub Rusinowski · Last updated September 29, 2026
Yes, comfortably — GLM-5.1 72B at Q4_K_M needs 46.7 GB at 8K context (43.5 GB weights + 3.2 GB KV cache/overhead), leaving ~49.3 GB of the Apple M3 Max's 96 GB usable memory, at ~5 tok/s (est.), with room for up to 64K context.
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Apple M3 Max Specs
| VRAM | 128 GB unified memory |
| Memory Bandwidth | 400 GB/s |
GLM-5.1 72B on the Apple M3 Max: VRAM by quantization
| Quant | VRAM needed | Fits 128 GB? | Max context | Whole PC |
|---|---|---|---|---|
| F16 | 147.2 GB | ✗ No | — | — |
| Q8_0 | 79.7 GB | ✓ Yes | 32K | — |
| Q6_K | 62.3 GB | ✓ Yes | 64K | — |
| Q5_K_M | 54.2 GB | ✓ Yes | 64K | — |
| Q4_K_M | 46.7 GB | ✓ Yes | 64K | — |
| Q3_K_M | 33.9 GB | ✓ Yes | 64K | — |
| Q2_K | 26.9 GB | ✓ Yes | 64K | — |
Assumes an 8K-token context with an f16 KV cache, on an estimated architecture — this model publishes no config we can read. A longer window needs more; a quantized KV cache needs less. “Max context” is the largest window that still fits in 128 GB of unified memory. Figures are estimates from parameter count, quantization and memory bandwidth — the analyzer lets you tune KV-cache quant and context.
Context costs VRAM too. At Q4_K_M on the Apple M3 Max: 8K 46.7 GB · 32K 53.9 GB · 125K 82 GB. Every window this model publishes still fits 128 GB.
No compatible GPU? GLM-5 / GLM-5.1 on 8 GB of system RAM, CPU only: runs, but it is tight.
GLM-5 / GLM-5.1 Sizes That Fit the Apple M3 Max (at 8K context)
| GLM-5.1 72B | Q4_K_M · 46.7 GB at 8K context · ~5 tok/s (est.) |
| GLM-5 32B | Q4_K_M · 22 GB at 8K context · ~10 tok/s (est.) |
| GLM-5 9B | Q4_K_M · 7.4 GB at 8K context · ~33 tok/s (est.) |
GLM-5 / GLM-5.1 needs ~47 GB but this GPU has 128 GB. Rent a A100 (80 GB)-class GPU by the hour instead of buying one:
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Cloud rates verified 2026-07 — estimates, and marketplace prices vary. Buying price is GPU MSRP only, not a full PC.
FAQ
Will GLM-5 / GLM-5.1 run on the Apple M3 Max?
Yes, comfortably — GLM-5.1 72B at Q4_K_M needs 46.7 GB at 8K context (43.5 GB weights + 3.2 GB KV cache/overhead), leaving ~49.3 GB of the Apple M3 Max's 96 GB usable memory, at ~5 tok/s (est.), with room for up to 64K context.
Which GLM-5 / GLM-5.1 variant fits best on the Apple M3 Max?
GLM-5.1 72B at Q4_K_M quantization needs 46.7 GB at 8K context (43.5 GB weights + 3.2 GB KV cache/overhead), estimated ~5 tokens/sec, up to 64K context.
Every GLM-5 / GLM-5.1 size on the Apple M3 Max
| Size | VRAM at 8K | Verdict | Speed |
|---|---|---|---|
| GLM-5 744B | 455.2 GB | Does not fit | — |
| GLM-5.1 72B | 46.7 GB | Runs | ~5 tok/s |
| GLM-5 32B | 22 GB | Runs | ~10 tok/s |
| GLM-5 9B | 7.4 GB | Runs | ~33 tok/s |
GLM-5 / GLM-5.1 on Other GPUs
Popular Models on the Apple M3 Max
VRAM Tier
Troubleshooting
Buying Guide
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