Skip to content

Device profile · iOS

Best local LLMs for iPhone Air

iPhone Air has ~8 GB estimated usable for weights, cache and runtime; 68 of 161 tracked models fit at the estimated 4K baseline. Best tool: Apple Foundation Models.

60 fit with room 8 tight fit 93 too heavy
Usable memory
~8 GB
Estimated fits
68
Too large
93
Suggested fit
4B
Suggested fit Q4_K_M

Runs at Q4_K_M using ~3.8 GB of ~8 GB usable. You have room for Q8_0 for higher quality.

The suggested model uses recorded Arena scores where available, then estimated fit and speed. Score coverage is partial; it does not establish the best model for every task. Fit is an estimate, not a benchmark on this device.

Set up Gemma 3 4B on this device →

Estimated memory fits on iPhone Air

Compatible models 68 total

Best way to run models on iOS

Runtime guide iOS

Beginner: Apple Foundation Models, Built into iOS 26, ~3B on-device model, zero download, fully private.

Power user: PocketPal AI, Run any GGUF from HuggingFace fully offline.

Phones realistically run 1B-4B class models. Anything larger thermally throttles or OOMs.

Full iOS tool guide →

FAQ

What is the best local LLM for iPhone Air?

Gemma 3 4B is a suggested fit, using ~3.8 GB at Q4_K_M of the ~8 GB usable on iPhone Air.

How much of iPhone Air's memory can I use for a model?

About 8 GB. CPU and GPU share one memory pool; the rest stays with the operating system.

Which tool should I use on iOS?

Apple Foundation Models (Built into iOS 26, ~3B on-device model, zero download, fully private.) or PocketPal AI for speed. Phones realistically run 1B-4B class models. Anything larger thermally throttles or OOMs.

Compare nearby devices

Hardware with a similar usable pool, and how many of the 161 tracked models each runs next to iPhone Air's 68.

Sources

Memory figures are estimates. See methodology.