Can I run basal-omni-1.0-ultra on a Mac with 512 GB?

Yes

Its published weights (62.5 GB) fit in the 384 GB a Mac with 512 GB can use, with room for ≈ 256K tokens of context.

hf download Remek/basal-omni-1.0-ultra

Files and context on Mac with 512 GB

Each file of basal-omni-1.0-ultra (and of GGUF versions the site has analyzed), and how much context fits next to it, with the context cache in 16-bit or 8-bit.

basal-omni-1.0-ultra on other hardware

Popular models that run on Mac with 512 GB

Assumes 75% of the Mac's memory is usable (macOS's default limit for the GPU; it can be raised) and at least 4K tokens of context for one conversation, with the context cache in 16-bit unless noted. Fits leaves at least 20% of that memory for context; Tight leaves less.