Yi 1.5 on Apple M3 Pro · 18GB

✅ Runs comfortably — Yi 1.5 9B @ Q5_K_M
Yi 1.5 9B at Q5_K_M needs ~7.1 GB (weights 5.8 GB + KV 768 MB + overhead 512 MB @ 8K ctx) of your 9.1 GB usable (of 18.0 GB unified memory) — plenty of headroom. Expect ~12–20 tok/s (usable).
context @ Q5_K_M: comfortable to 8K · runs to its full 32K
quantneedsspeed
~ Q8_010.0 GB~1–2 tok/s (slow)
✓ Q5_K_M7.1 GB~12–20 tok/s (usable)
✓ Q4_K_M6.2 GB~14–25 tok/s (usable)
$runlocal install yi:9b
runlocal verdict card
download card share on x share on reddit drop it in your model-drop post
Yi 1.5: Runs comfortably
for your own README — links back here

Same model, other machines: Apple M1 · Apple M1 Pro · Apple M2 · Apple M2 Pro · Apple M4 Pro · Apple M3 Max

Also runs on a Apple M3 Pro: DeepSeek-R1 (distill) · Qwen2.5 · Mistral 7B · Qwen3 · Llama 3.1

Best models for a Apple M3 Pro · 18GB →

Architecturally similar

These share Yi 1.5's KV-cache geometry — they size memory the same way, so here's how they fit on a Apple M3 Pro · 18GB too:

modelsharesverdict here
Qwen2.5-Coder 4kv/128hd8kv/128hd ✅ Runs (tight)
Llama 3.2 8kv/128hd ✅ Runs comfortably
Llama 3.3 8kv/128hd ❌ Won't fit
Mistral Small 3 8kv/128hd 🐢 CPU-only (slow)
Mistral Nemo 8kv/128hd ✅ Runs (tight)
Codestral 8kv/128hd 🐢 CPU-only (slow)
Llama 3.2 Vision 8kv/128hd ✅ Runs (tight)
Mixtral 8x7B 8kv/128hd ❌ Won't fit

…and 10 more — see the Yi 1.5 page.

Check any combo yourself: open the checker →