llmrun

Apple · A19 Pro · Phone

Best AI Models for iPhone 17 Pro Max (12 GB)

Runs 1–4B models well; 8–9B only just fit in the 7 GB iOS gives one app.

12 GB unified7 GB for one app76.8 GB/s9 TFLOPS FP162025

What small LLMs can the iPhone 17 Pro Max run?

#ModelSpeedllmrun ScoreQuant · Memory
1
Q4_K_M · 3.4 GB · 16.5 t/s
16.5 tok/sQ4_K_M · 3.4 GB
2
Q4_K_M · 5.0 GB · 18.9 t/s
18.9 tok/sQ4_K_M · 5.0 GB
3
Ling 3.0 TinyInclusion AI
Q4_K_M · 5.5 GB · 45.1 t/s
45.1 tok/sQ4_K_M · 5.5 GB
4
Q4_K_M · 3.5 GB · 15.7 t/s
15.7 tok/sQ4_K_M · 3.5 GB
5
Qwen3.5 2BAlibaba
Q4_K_M · 1.9 GB · 30.4 t/s
30.4 tok/sQ4_K_M · 1.9 GB
See all 209 models on the iPhone 17 Pro Max →Bars = traction for models without a Score yet

About the iPhone 17 Pro Max

The iPhone 17 Pro Max suits smaller models: it runs 1–4B models well. iOS lets one app use about 7 GB of the 12 GB, so 8–9B models barely fit. Prompt reading is its weak spot: a 4K-token prompt waits 21 s before the first word on Qwen3.5 4B. A19 Pro chip, released 2025.

Memory for one app7 GBof 12 GB
Best pick16.5tok/s on Qwen3.5 4B
Largest that fits9BQwen3.5 9B, only just
ChipA19 Proreleased 2025

iPhone 17 Pro Max strengths and weaknesses

Strengths

  • Runs 3–4B models: Qwen3.5 4B at 16.5 tok/s in 3.4 GB

Weaknesses

  • 14B models don't fit: Qwen3 14B needs 11.9 GB at Q4 vs 7 GB usable here
  • Little room for context: Qwen3.5 9B uses 6.6 of 7 GB usable, 0.4 GB left
  • Slow prompt reading: A 32K-token prompt on Qwen3.5 4B waits 2.8 min for the first token

Memory for models

7 GB of 12 GB
1B2.3 GB3–4B3.4 GB8–9B6.6 GB
3–4B3.4 GB8–9B6.6 GB
For models 7 GBiOS and other apps: 5 GBModel size at Q4

14B models need 11.9 GB at Q4, more than the 7 GB available.

Other iPhones for local AI

How much memory iOS lets one app use decides what phone works for local AI, not the camera or the screen.

iPhone 17 Pro Max tokens per second by model size

Phones run small models. Output speed follows memory bandwidth (76.8 GB/s); grey rows need more than the 7 GB iOS gives one app.

  1. 1BLlama 3.2 1B Instruct · Q4_K_M · 2.3 GB
    65.6tok/s
  2. 3–4BQwen3.5 4B · Q4_K_M · 3.4 GB
    16.5tok/s
  3. 8–9BQwen3.5 9B · Q4_K_M · 6.6 GB tight · Q4_K_M
    8.5tok/s
  4. 14BQwen3 14B · not at 4-bit
    needs 11.9 GB

Estimated speeds: Q4_K_M, 4K context, one user. How we estimate

iPhone generations: memory one app can use

A17 Pro → A19 Pro
  1. iPhone 15 ProA17 Pro · 2023
    4.5 GBup to 4B
  2. iPhone 16 Pro MaxA18 Pro · 2024
    4.5 GBup to 4B
  3. iPhone 17A19 · 2025
    5 GBup to 4B
  4. iPhone 17 Pro MaxA19 Pro · 2025
    7 GBup to 9B (tight)

Every phone here has 8 GB or more, but iOS caps one app well below that. The iPhone 17 Pro Max is the first to fit an 8–9B model.

All 783 models on the iPhone 17 Pro Max

Featured only

Best quant that fits in 7 GB, ordered by llmrun Score. Fit grades how well it runs here, S best. How ranking works

LLM models compatible with iPhone 17 Pro Max — ranked by Score, recency and Fit
ModelVRAMScoreFit
Q4_K_M·179.2 t/s
0.3 GBS99, Runs great
Supra 50M Reasoning
Q4_K_M·149.3 t/s
0.3 GBS97, Runs great
Tiny GptOssForCausalLM
Q4_K_M·179.2 t/s
0.6 GBS99, Runs great
BF16·167.0 t/s
0.3 GBS98, Runs great
Q4_K_M·179.2 t/s
0.3 GBS99, Runs great
Tiny GptOssForCausalLM
Q4_K_M·179.2 t/s
0.6 GBS99, Runs great
JevK5
Q4_K_M·18.0 t/s
3.2 GBB58, Decent
CAJAL 4B
Q4_K_M·20.4 t/s
4.8 GBB60, Decent
Q4_K_M·16.1 t/s
4.7 GBB56, Decent
Agents A1 4B
Q4_K_M·16.9 t/s
3.4 GBB56, Decent
Q4_K_M·179.2 t/s
0.6 GBS99, Runs great
MiniCPM5 1B
Q4_K_M·54.3 t/s
1.3 GBA81, Runs well
DeepSeek OCR
Q4_K_M·56.0 t/s
2.8 GBA82, Runs well
Q4_K_M·153.6 t/s
0.3 GBS97, Runs great
Molmo2 4B
Q4_K_M·15.8 t/s
4.7 GBB55, Decent

iPhone 17 Pro Max specs

Specs

Chip
A19 Pro
CPU cores
6
GPU cores
6
Unified memory
12 GB LPDDR5X-9600
For models
7 GB (iOS keeps 5 GB)
Memory bandwidth
76.8 GB/s
FP16 (dense)
9 TFLOPS
NPU
16-core Neural Engine
Released
2025-09-19

iPhone 17 Pro Max FAQ

Can the iPhone 17 Pro Max run an LLM offline?

Yes, small ones. Qwen3.5 4B runs at about 16.5 tok/s, and 1B models run around 66 tok/s. iOS lets one app use about 7 GB of the 12 GB, so larger models don't fit.

How much memory is available for AI on the iPhone 17 Pro Max?

About 7 GB of the 12 GB. iOS keeps roughly 5 GB for itself and other apps.

What is the largest model the iPhone 17 Pro Max can run?

Qwen3.5 9B (9.7B) is the largest at 4-bit or better: at Q4_K_M it uses 6.6 GB, 95% of the available memory, and runs at about 8.5 tok/s.

How long does the iPhone 17 Pro Max take to read a long prompt?

On Qwen3.5 4B, about 21 s for a 4K-token prompt and 2.8 min for a 32K-token document before the first word appears.