What is the minimum hardware to run LFM2.5 8B-A1B?

iPhone 17 Pro is the lightest device that runs LFM2.5 8B-A1B, using ~6.7 GB at Q4_K_M of its ~8 GB usable. Anything with less usable memory cannot load it.

How much memory does LFM2.5 8B-A1B need?

At Q4_K_M it needs about 6.7 GB (weights ~5.2 GB + KV cache + overhead at 4k context). At Q8_0 budget ~10.5 GB.

Can I run LFM2.5 8B-A1B on a Mac?

Yes. LFM2.5 8B-A1B runs on Apple Silicon with enough unified memory; the ranked list below shows the lightest Mac that fits.

Can I run LFM2.5 8B-A1B on a phone?

Yes, on higher-memory phones. LFM2.5 8B-A1B fits on the phones marked "runs" below, though expect slower speeds than a desktop GPU.

Hardware guide · LFM

LF What hardware do you need to run LFM2.5 8B-A1B?

LFM2.5 8B-A1B needs about 6.7 GB to run at Q4_K_M, so the lightest hardware that runs it is iPhone 17 Pro. 33 of 40 devices tested can run it.

Needs (Q4_K_M): ~6.7 GB
Devices that run it: 33
Too small: 7
Lightest that runs it: ~8 GB

Recommended Q4_K_M

iPhone 17 Pro Yes

Runs at Q4_K_M using ~6.7 GB of ~8 GB usable.

What kind of hardware runs LFM2.5 8B-A1B

Of the 33 devices that run it, here is the split by hardware class.

9 discrete GPUs 13 Macs 2 laptops 9 phones

Hardware that runs LFM2.5 8B-A1B

Ranked by usable memory, lightest first. Prices are approximate street prices for the device itself (a GPU is the card alone; a Mac is the whole machine). Tok/s is a bandwidth estimate; see methodology.

Compatible devices 33 total

Too small for LFM2.5 8B-A1B

Apple M1 (8GB) 8GB RAM Laptop (CPU/iGPU only) iPhone 15 Pro iPhone 16 iPhone 16 Pro Generic Android Phone (8GB RAM) iPhone 17

See the full LFM2.5 8B-A1B memory breakdown, or compare it against other models.

Sources

Memory at Q4_K_M (6.7 GB = 5.2 GB weights + KV cache + overhead), validated 2026-08-03. See methodology.