Compatibility check
Can I run gpt-oss-120b on Apple M3 Ultra (80-core GPU)?
Yes — it runs.best quant:
Decode speed
158 tok/sest
Usable context
131K
Memory
512 GB
Fits in memory158 tok/sest · 131K ctx
Fits in memory134 tok/sest · 131K ctx
Fits in memory90 tok/sest · 131K ctx