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A.X K2

General model by skt · 691.69B parameters

Chip
Unified Memory
Bandwidth 307 GB/s 16-core GPU, the lowest of 2 bins at this memory
Available for Models ~21 GB

Everything this chip runs, machine by machine: MacBook Pro 14" M5 Pro, MacBook Pro 16" M5 Pro, Mac mini M5 Pro

Won't fit

A.X K2 needs at least 238.3 GiB, more than the 20.6 GiB available for models, so it needs a Mac with more memory.

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Specifications

Parameters691.7B
Architectureaxk2
Context Length262K
CategoryGeneral
Mixture of Experts 256 experts, 8 active
Formatgguf
Minimum RAM386.5 GB
Licenseapache-2.0

Quantization Options

Unvalidated forecasts for an 8K text context under a declared full-GPU scenario, at the lowest GPU bin sold with the chosen memory. Memory is reported as its components: exact artifact bytes and a KV allocation derived from a declared attention layout where the catalog carries them, a parameter proxy with no error bound where it does not, and the runtime's working memory, which a browser cannot measure. A fit is confirmed only when every component is known, so a model whose known memory fits reads "Fit unconfirmed" until ToolPiper measures it on your Mac, and one whose known memory alone exceeds the budget reads "Won't fit". Estimated speed ignores prompt length and prefill, and can overstate long-context performance. No measured speed error range is available. The recommendation score weighs declared preferences, not measured answer quality, and becomes a range where evidence is missing.

QuantizationMemorySpeedVerdict
Q8_0 at least 676.4 GiB Benchmark needed Won't fit
Q6_K at least 515.3 GiB Benchmark needed Won't fit
Q5_K_M at least 438.0 GiB Benchmark needed Won't fit
Q4_K_M at least 373.6 GiB Benchmark needed Won't fit
Q3_K_M at least 309.2 GiB Benchmark needed Won't fit
Q2_K at least 238.3 GiB Benchmark needed Won't fit

Which Mac Can Run A.X K2?

Affiliate disclosure: the shop icons in this table are Amazon affiliate links. As an Amazon Associate, ModelPiper earns from qualifying purchases. Every fit rating, quantization and tok/s figure below is computed from the hardware specs and is not influenced by that.

Unvalidated forecasts for an 8K text context under a declared full-GPU scenario, at the lowest GPU bin sold with the chosen memory. Memory is reported as its components: exact artifact bytes and a KV allocation derived from a declared attention layout where the catalog carries them, a parameter proxy with no error bound where it does not, and the runtime's working memory, which a browser cannot measure. A fit is confirmed only when every component is known, so a model whose known memory fits reads "Fit unconfirmed" until ToolPiper measures it on your Mac, and one whose known memory alone exceeds the budget reads "Won't fit". Estimated speed ignores prompt length and prefill, and can overstate long-context performance. No measured speed error range is available. The recommendation score weighs declared preferences, not measured answer quality, and becomes a range where evidence is missing.

MacQuanttok/sRAM %
Mac Studio · M3 Ultra 512GB Q5_K_M — 86%
Mac Studio · M5 Ultra 512GB Q5_K_M — 86%
MacBook Air · M1 8GB — — 2,979%
MacBook Air · M1 16GB — — 1,490%
MacBook Air · M2 8GB — — 2,979%
MacBook Air · M2 16GB — — 1,490%
MacBook Air · M2 24GB — — 993%
MacBook Air · M3 8GB — — 2,979%
MacBook Air · M3 16GB — — 1,490%
MacBook Air · M3 24GB — — 993%
MacBook Air · M4 16GB — — 1,490%
MacBook Air · M4 24GB — — 993%
MacBook Air · M4 32GB — — 745%
MacBook Air · M5 16GB — — 1,490%
MacBook Air · M5 24GB — — 993%
MacBook Air · M5 32GB — — 745%
MacBook Pro 14" · M1 Pro 16GB — — 1,490%
MacBook Pro 14" · M1 Pro 32GB — — 745%
MacBook Pro 14" · M1 Max 32GB — — 745%
MacBook Pro 14" · M1 Max 64GB — — 372%
MacBook Pro 14" · M2 Pro 16GB — — 1,490%
MacBook Pro 14" · M2 Pro 32GB — — 745%
MacBook Pro 14" · M2 Max 32GB — — 745%
MacBook Pro 14" · M2 Max 64GB — — 372%
MacBook Pro 14" · M2 Max 96GB — — 248%
MacBook Pro 14" · M3 8GB — — 2,979%
MacBook Pro 14" · M3 16GB — — 1,490%
MacBook Pro 14" · M3 24GB — — 993%
MacBook Pro 14" · M3 Pro 18GB — — 1,324%
MacBook Pro 14" · M3 Pro 36GB — — 662%
MacBook Pro 14" · M3 Max 36GB — — 662%
MacBook Pro 14" · M3 Max 48GB — — 497%
MacBook Pro 14" · M3 Max 64GB — — 372%
MacBook Pro 14" · M3 Max 96GB — — 248%
MacBook Pro 14" · M3 Max 128GB — — 186%
MacBook Pro 14" · M4 16GB — — 1,490%
MacBook Pro 14" · M4 24GB — — 993%
MacBook Pro 14" · M4 32GB — — 745%
MacBook Pro 14" · M4 Pro 24GB — — 993%
MacBook Pro 14" · M4 Pro 48GB — — 497%
MacBook Pro 14" · M4 Max 36GB — — 662%
MacBook Pro 14" · M4 Max 48GB — — 497%
MacBook Pro 14" · M4 Max 64GB — — 372%
MacBook Pro 14" · M4 Max 128GB — — 186%
MacBook Pro 14" · M5 16GB — — 1,490%
MacBook Pro 14" · M5 24GB — — 993%
MacBook Pro 14" · M5 32GB — — 745%
MacBook Pro 14" · M5 Pro 24GB — — 993%
MacBook Pro 14" · M5 Pro 48GB — — 497%
MacBook Pro 14" · M5 Pro 64GB — — 372%
MacBook Pro 14" · M5 Max 36GB — — 662%
MacBook Pro 14" · M5 Max 48GB — — 497%
MacBook Pro 14" · M5 Max 64GB — — 372%
MacBook Pro 14" · M5 Max 128GB — — 186%
MacBook Pro 16" · M1 Pro 16GB — — 1,490%
MacBook Pro 16" · M1 Pro 32GB — — 745%
MacBook Pro 16" · M1 Max 32GB — — 745%
MacBook Pro 16" · M1 Max 64GB — — 372%
MacBook Pro 16" · M2 Pro 16GB — — 1,490%
MacBook Pro 16" · M2 Pro 32GB — — 745%
MacBook Pro 16" · M2 Max 32GB — — 745%
MacBook Pro 16" · M2 Max 64GB — — 372%
MacBook Pro 16" · M2 Max 96GB — — 248%
MacBook Pro 16" · M3 Pro 18GB — — 1,324%
MacBook Pro 16" · M3 Pro 36GB — — 662%
MacBook Pro 16" · M3 Max 36GB — — 662%
MacBook Pro 16" · M3 Max 48GB — — 497%
MacBook Pro 16" · M3 Max 64GB — — 372%
MacBook Pro 16" · M3 Max 96GB — — 248%
MacBook Pro 16" · M3 Max 128GB — — 186%
MacBook Pro 16" · M4 Pro 24GB — — 993%
MacBook Pro 16" · M4 Pro 48GB — — 497%
MacBook Pro 16" · M4 Max 36GB — — 662%
MacBook Pro 16" · M4 Max 48GB — — 497%
MacBook Pro 16" · M4 Max 64GB — — 372%
MacBook Pro 16" · M4 Max 128GB — — 186%
MacBook Pro 16" · M5 Pro 24GB — — 993%
MacBook Pro 16" · M5 Pro 48GB — — 497%
MacBook Pro 16" · M5 Pro 64GB — — 372%
MacBook Pro 16" · M5 Max 36GB — — 662%
MacBook Pro 16" · M5 Max 48GB — — 497%
MacBook Pro 16" · M5 Max 64GB — — 372%
MacBook Pro 16" · M5 Max 128GB — — 186%
Mac mini · M1 8GB — — 2,979%
Mac mini · M1 16GB — — 1,490%
Mac mini · M2 8GB — — 2,979%
Mac mini · M2 16GB — — 1,490%
Mac mini · M2 24GB — — 993%
Mac mini · M2 Pro 16GB — — 1,490%
Mac mini · M2 Pro 32GB — — 745%
Mac mini · M4 16GB — — 1,490%
Mac mini · M4 24GB — — 993%
Mac mini · M4 32GB — — 745%
Mac mini · M4 Pro 24GB — — 993%
Mac mini · M4 Pro 48GB — — 497%
Mac mini · M4 Pro 64GB — — 372%
Mac mini · M5 Pro 24GB — — 993%
Mac mini · M5 Pro 48GB — — 497%
Mac mini · M5 Pro 64GB — — 372%
Mac mini · M6 16GB — — 1,490%
Mac mini · M6 24GB — — 993%
Mac mini · M6 32GB — — 745%
Mac Studio · M1 Max 32GB — — 745%
Mac Studio · M1 Max 64GB — — 372%
Mac Studio · M1 Ultra 64GB — — 372%
Mac Studio · M1 Ultra 128GB — — 186%
Mac Studio · M2 Max 32GB — — 745%
Mac Studio · M2 Max 64GB — — 372%
Mac Studio · M2 Max 96GB — — 248%
Mac Studio · M2 Ultra 64GB — — 372%
Mac Studio · M2 Ultra 128GB — — 186%
Mac Studio · M2 Ultra 192GB — — 124%
Mac Studio · M4 Max 36GB — — 662%
Mac Studio · M4 Max 48GB — — 497%
Mac Studio · M4 Max 64GB — — 372%
Mac Studio · M4 Max 128GB — — 186%
Mac Studio · M3 Ultra 96GB — — 248%
Mac Studio · M3 Ultra 256GB — — 93%
Mac Studio · M5 Max 36GB — — 662%
Mac Studio · M5 Max 48GB — — 497%
Mac Studio · M5 Max 64GB — — 372%
Mac Studio · M5 Max 128GB — — 186%
Mac Studio · M5 Ultra 96GB — — 248%
Mac Studio · M5 Ultra 256GB — — 93%
iMac · M1 8GB — — 2,979%
iMac · M1 16GB — — 1,490%
iMac · M3 8GB — — 2,979%
iMac · M3 16GB — — 1,490%
iMac · M3 24GB — — 993%
iMac · M4 16GB — — 1,490%
iMac · M4 24GB — — 993%
iMac · M4 32GB — — 745%

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