Apple · apple

Apple M3 Pro

Apple M3 Pro has 18 GB of unified memory at 154 GB/s — about 12.56 GiB usable after driver and compositor overhead. 1849 of 2118 indexed models fit at 8K context with q8_0 KV. Note only 14 GB of its 18 GB is allocatable to the GPU.

Spec sheet· bandwidth, theoreticalFrom the file· fit from summed bytesPredicted· speed
Memory
18 GB
LPDDR5-6400
Bandwidth
154 GB/s
192-bit bus
Tensor FP16
dense
TDP
KV cachef16q8_0q4_0quantizing the KV cache is a ~2× lever on the dominant term at long context
video 15text 1586vision language 160audio asr 39audio tts 21image 2embedding 26

What fits at 8K context

largest quantization that fits, per model · 1849 of 2118 indexed
ModelBest quantParamsWeightsKVTotal in memoryHeadroomtok/s
Wan2.2-S2V-14BQ4_K_M16.3B12.91 GiB0.00 GiB13.49 GiB0.01 GiB10±8.3%
gpt-oss-20bMoEF1621.5B12.85 GiB0.11 GiB13.49 GiB0.01 GiB27±37%
gpt-oss-safeguard-20bMoEF1621.5B12.85 GiB0.11 GiB13.49 GiB0.01 GiB27±37%
Pantheon-Reasoning-27BIQ3_XS27.8B12.61 GiB0.27 GiB13.49 GiB0.01 GiB10±8.3%
Qwen3.5-27BIQ3_XS27.8B12.61 GiB0.27 GiB13.49 GiB0.01 GiB10±8.3%
granite-4.0-h-tinyMoEBF166.9B12.94 GiB0.03 GiB13.49 GiB0.01 GiB31±37%
granite-4.0-h-tiny-baseMoEBF166.9B12.94 GiB0.03 GiB13.49 GiB0.01 GiB31±37%
GRM-2.6-Plus-0628Q2_K_M27.8B12.61 GiB0.27 GiB13.49 GiB0.01 GiB10±8.3%
Noromaid-20b-v0.1.1Q2_K20.0B7.74 GiB5.15 GiB13.48 GiB0.02 GiB10±8.3%
Nethena-20BQ2_K20.0B7.74 GiB5.15 GiB13.48 GiB0.02 GiB10±8.3%
gemma-2-27b-itIQ3_M27.2B11.60 GiB1.19 GiB13.48 GiB0.02 GiB10±8.3%
magnum-v4-27bIQ3_M27.2B11.60 GiB1.19 GiB13.48 GiB0.02 GiB10±8.3%
Qwen3.5-40B-Claude-4.6-Opus-Deckard-Heretic-Uncensored-ThinkingI1-IQ2_M39.5B12.46 GiB0.40 GiB13.47 GiB0.03 GiB10±8.3%
Huihui-gemma-3n-E4B-it-abliteratedF167.8B12.80 GiB0.09 GiB13.47 GiB0.03 GiB10±8.3%
gemma-3n-E4B-itF167.8B12.80 GiB0.09 GiB13.47 GiB0.03 GiB10±8.3%
spoomplesmaxx-v2.1-30BI1-IQ3_S28.9B11.74 GiB1.06 GiB13.46 GiB0.04 GiB10±8.3%
Huihui-granite-4.1-30b-abliteratedI1-IQ3_S28.9B11.74 GiB1.06 GiB13.46 GiB0.04 GiB10±8.3%
granite-4.1-30b-hereticI1-IQ3_S28.9B11.74 GiB1.06 GiB13.46 GiB0.04 GiB10±8.3%
reka-flash-3.1I1-Q4_120.9B12.29 GiB0.55 GiB13.46 GiB0.04 GiB10±8.3%
reka-flash-3Q4_120.9B12.29 GiB0.55 GiB13.46 GiB0.04 GiB10±8.3%
IQuest-Coder-V1-40B-InstructI1-IQ2_S39.8B11.48 GiB1.33 GiB13.46 GiB0.04 GiB10±8.3%
Seed-OSS-36B-Instruct-biprojected-norm-preserving-abliteratedI1-Q2_K_S36.2B11.74 GiB1.06 GiB13.45 GiB0.05 GiB10±8.3%
Hermes-4.3-36B-hereticI1-Q2_K_S36.2B11.74 GiB1.06 GiB13.45 GiB0.05 GiB10±8.3%
Qwen3.6-27B-uncensored-heretic-v2-Native-MTP-PreservedI1-Q3_K_M27.4B12.57 GiB0.27 GiB13.45 GiB0.05 GiB10±8.3%
Qwen3.6-27B-Fable-Fusion-711-Uncensored-Heretic-NM-DAU-MTPI1-Q3_K_M27.8B12.57 GiB0.27 GiB13.45 GiB0.05 GiB10±8.3%
Qwen3.6-27B-Fable-5-ExperimentalI1-Q3_K_M27.8B12.57 GiB0.27 GiB13.45 GiB0.05 GiB10±8.3%
Qwable-5-27B-CoderI1-Q3_K_M27.8B12.57 GiB0.27 GiB13.45 GiB0.05 GiB10±8.3%
Qwen3.6-27B-AEON-Ultimate-Uncensored-BF16Q3_K_M27.4B12.57 GiB0.27 GiB13.45 GiB0.05 GiB10±8.3%
EVE-27b-XENO-HAT-DeepSeek-V4-FlashI1-Q3_K_M27.8B12.57 GiB0.27 GiB13.45 GiB0.05 GiB10±8.3%
EVE-27B-XENO-HATI1-Q3_K_M27.8B12.57 GiB0.27 GiB13.45 GiB0.05 GiB10±8.3%
Godoter-27BI1-Q3_K_M27.8B12.57 GiB0.27 GiB13.45 GiB0.05 GiB10±8.3%
Reasoning-Medical-27BI1-Q3_K_M27.8B12.57 GiB0.27 GiB13.45 GiB0.05 GiB10±8.3%
Qwopus3.6-27B-v2-abliteratedI1-Q3_K_M27.4B12.57 GiB0.27 GiB13.45 GiB0.05 GiB10±8.3%
Qwen3.6-27B-Uncensored-HauhauCS-Aggressive-BF16I1-Q3_K_M27.8B12.57 GiB0.27 GiB13.45 GiB0.05 GiB10±8.3%
Reasoning-Medical0.1-27BI1-Q3_K_M27.8B12.57 GiB0.27 GiB13.45 GiB0.05 GiB10±8.3%
Huihui-ThinkingCap-Qwen3.6-27B-abliteratedI1-Q3_K_M27.4B12.57 GiB0.27 GiB13.45 GiB0.05 GiB10±8.3%
Semancer-27BI1-Q3_K_M27.8B12.57 GiB0.27 GiB13.45 GiB0.05 GiB10±8.3%
Qwen3.6-27B-Uncensored-CyberQ3_K_M27.4B12.57 GiB0.27 GiB13.45 GiB0.05 GiB10±8.3%
Qwen3.6-27B-Omnimerge-v4Q3_K_M27.8B12.57 GiB0.27 GiB13.45 GiB0.05 GiB10±8.3%
Qwopus3.6-27B-v2Q3_K_M27.8B12.57 GiB0.27 GiB13.45 GiB0.05 GiB10±8.3%
Darwin-28B-CoderI1-Q3_K_M26.9B12.57 GiB0.27 GiB13.45 GiB0.05 GiB10±8.3%
Qwopus3.6-27B-CoderQ3_K_M27.8B12.57 GiB0.27 GiB13.45 GiB0.05 GiB10±8.3%
Qwen3-VL-30B-A3B-ThinkingMoEQ3_K_S31.1B12.51 GiB0.40 GiB13.45 GiB0.05 GiB32±37%
MiroThinker-v1.0-30BMoEQ3_K_S30.5B12.51 GiB0.40 GiB13.45 GiB0.05 GiB32±37%
Qwen3-30B-A3BMoEQ3_K_S30.5B12.51 GiB0.40 GiB13.45 GiB0.05 GiB32±37%
Qwen3-30B-A3B-Instruct-2507MoEQ3_K_S30.5B12.51 GiB0.40 GiB13.45 GiB0.05 GiB32±37%
Qwen3-30B-A3B-Thinking-2507MoEQ3_K_S30.5B12.51 GiB0.40 GiB13.45 GiB0.05 GiB32±37%
Pantheon-Proto-RP-1.8-30B-A3BMoEQ3_K_S30.5B12.51 GiB0.40 GiB13.45 GiB0.05 GiB32±37%
Pantheon-Reasoning-26B-A4B-1.1MoEQ3_K_L26.5B12.59 GiB0.32 GiB13.45 GiB0.05 GiB10±8.3%
Gemma-4-31B-Isometry-RPI1-Q2_K32.7B11.53 GiB1.29 GiB13.45 GiB0.05 GiB10±8.3%
Gemma-4-Dark-Gemistry-31BI1-Q2_K32.7B11.53 GiB1.29 GiB13.45 GiB0.05 GiB10±8.3%
Prosopon-31BI1-Q2_K32.7B11.53 GiB1.29 GiB13.45 GiB0.05 GiB10±8.3%
Gemma-4-Novelist-Eclipse-31BI1-Q2_K32.7B11.53 GiB1.29 GiB13.45 GiB0.05 GiB10±8.3%
Giftige-Blume-31B-v1-StyleSwapI1-Q2_K32.7B11.53 GiB1.29 GiB13.45 GiB0.05 GiB10±8.3%
G4-MeroMero-31B-StyleSwapI1-Q2_K32.7B11.53 GiB1.29 GiB13.45 GiB0.05 GiB10±8.3%
Gemma-4-31B-StyleTune-heretic-araI1-Q2_K32.7B11.53 GiB1.29 GiB13.45 GiB0.05 GiB10±8.3%
Pantheon-Reasoning-31B-1.1I1-Q2_K32.7B11.53 GiB1.29 GiB13.45 GiB0.05 GiB10±8.3%
Gemma-4-31B-StyleTuneI1-Q2_K32.7B11.53 GiB1.29 GiB13.45 GiB0.05 GiB10±8.3%
Barcenas-StyleTune-31B-FableI1-Q2_K32.1B11.53 GiB1.29 GiB13.45 GiB0.05 GiB10±8.3%
Tongyi-DeepResearch-30B-A3BMoEQ3_K_S30.5B12.51 GiB0.40 GiB13.45 GiB0.05 GiB32±37%
From the filePredictedwhat these mean

Speed is modeled, not measured: decode is memory-bandwidth bound, so tokens per second is bytes read per token against achievable bandwidth. Mixture-of-experts models carry a wider band because only the routed experts are read each step, and few have been measured publicly.

Measured on this card

third-party benchmarks, aggregated
WorkloadMedianMiddle 50%Runs
Prompt processing339.31 tok/s305.24343.177
Text generation17.53 tok/s16.9530.517
Benchmarked· n=7

Aggregated from community-submitted runs, so the spread is wide by nature — it covers different models, resolutions, step counts and settings, not one controlled configuration. Read the middle 50% rather than the median alone. These figures are reproduced with attribution from llama.cpp-discussion-4167.

Questions people ask

What AI models can a Apple M3 Pro run?
1849 of 2118 indexed open-weight models fit a Apple M3 Pro at 8,192 context with q8_0 KV cache, the largest being Wan2.2-S2V-14B at Q4_K_M. That covers text, vision-language, image, video and speech models.
How much usable memory does a Apple M3 Pro actually have?
Its nameplate is 18 GB, but about 12.56 GiB is available to a model once driver and compositor overhead is accounted for, and only 14 GB of the pool can be allocated to the GPU at all.
Is a Apple M3 Pro fast for local AI?
Its memory bandwidth is 154 GB/s, and that figure — not teraflops — is what governs token generation speed. Capacity decides what you can run; bandwidth decides how fast it runs.