llmrun

Apple · M3 · Laptop

Best AI Models for MacBook Air 13" M3 (8 GB)

Runs only small models; 9B doesn't fit in 4.5 GB.

8 GB unified4.5 GB for models102.4 GB/s6 TFLOPS FP162024

What LLMs can the MacBook Air 13" M3 run?

#ModelSpeedllmrun ScoreQuant · Memory
1
Q4_K_M · 3.4 GB · 22.0 t/s
22.0 tok/sQ4_K_M · 3.4 GB
2
Q4_K_M · 3.5 GB · 20.9 t/s
20.9 tok/sQ4_K_M · 3.5 GB
3
Q4_K_M · 2.5 GB · 37.7 t/s
37.7 tok/sQ4_K_M · 2.5 GB
4
Qwen3.5 2BAlibaba
Q4_K_M · 1.9 GB · 40.5 t/s
40.5 tok/sQ4_K_M · 1.9 GB
5
Q4_K_M · 1.6 GB · 56.0 t/s
56.0 tok/sQ4_K_M · 1.6 GB
See all 160 models on the MacBook Air 13" M3 →Bars = traction for models without a Score yet

About the MacBook Air 13" M3 (8 GB)

The MacBook Air 13" M3 is the fastest 8 GB machine: it runs only small models. macOS keeps about 3.5 GB, leaving 4.5 GB for models. With 6 TFLOPS it reads long prompts faster than most 8 GB machines: a 4K-token prompt takes 34 s. M3 generation, released 2024; the newer M4 writes -29% faster with 1.2× the compute.

Speed in 8 GB#1102 GB/s
Prompt reading#26 TFLOPS
For models4.5 GBmacOS keeps 3.5 GB
ChipM3released 2024

MacBook Air 13" M3 strengths and weaknesses

Weaknesses

  • 7–9B models don't fit: Qwen3.5 9B needs 6.6 GB at Q4 vs 4.5 GB usable here
  • Slow prompt reading: A 32K-token prompt on Qwen3.5 4B waits 4.5 min for the first token
  • No CUDA: vLLM, AWQ, GPTQ and FP8 builds don't run; use GGUF or MLX

Memory for models

4.5 GB of 8 GB
For models 4.5 GBmacOS keeps 3.5 GBModel size at Q4

9B models need 6.6 GB at Q4, more than the 4.5 GB available. The 16 GB config fits Qwen3.5 9B →Or rent an RTX 3080 Ti (12 GB) from $0.14/hr →

Similar devices and alternatives

Other memory sizes of the same machine first, then machines and GPUs people weigh against it, each with the one reason it is worth a look. Speeds on Qwen3.5 9B.

MacBook Air 13" M3 tokens per second by model size

Output speed depends on memory bandwidth (102 GB/s). Grey rows need more than the 4.5 GB available.

  1. 9BQwen3.5 9B · not at 4-bit
    needs 6.6 GB
  2. 14BQwen3 14B · not at 4-bit
    needs 11.9 GB
  3. 27–31BQwen3.8 27B · not at 4-bit
    needs 17.9 GB
  4. 35B MoEQwen3.6 35B A3B · not at 4-bit
    needs 22.0 GB
  5. 70BLlama 3.3 70B Instruct · not at 4-bit
    needs 51.3 GB
  6. 120B MoEGPT OSS 120B · not at 4-bit
    needs 70.8 GB

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

Chip generations: writing vs compute

M1 → M5
Writing speed (tok/s)Compute (TFLOPS FP16)
1×2×3×4×M12020M22022M32024M42025M52026M1 · 4.5 TFLOPS FP16M1 · 12.5 tok/s · 68.3 GB/sM2 · 5.7 TFLOPS FP16M2 · 18.3 tok/s · 100 GB/sM3 · 5.6 TFLOPS FP16M3 · 18.7 tok/s · 102.4 GB/sM4 · 6.9 TFLOPS FP16M4 · 13.2 tok/s · 120 GB/sM5 · 12.8 TFLOPS FP16M5 · 16.9 tok/s · 153.6 GB/sCompute 2.8×Writing +35%
1×2×3×4×M12020M22022M32024M42025M52026M1 · 4.5 TFLOPS FP16M1 · 12.5 tok/s · 68.3 GB/sM2 · 5.7 TFLOPS FP16M2 · 18.3 tok/s · 100 GB/sM3 · 5.6 TFLOPS FP16M3 · 18.7 tok/s · 102.4 GB/sM4 · 6.9 TFLOPS FP16M4 · 13.2 tok/s · 120 GB/sM5 · 12.8 TFLOPS FP16M5 · 16.9 tok/s · 153.6 GB/sCompute 2.8×Writing +35%

Writing speed follows memory bandwidth and barely moved: 12.5 to 16.9 tok/s since the M1. Compute, which sets how fast prompts are read, grew 2.8×. Indexed to the M1; speeds on Qwen3.5 9B, same 8 GB.

All 586 models on the MacBook Air 13" M3

Featured only

Best quant that fits in 4.5 GB, ordered by llmrun Score. Fit grades how well it runs here, S best. How ranking works

LLM models compatible with MacBook Air 13" M3 (8 GB) — ranked by Score, recency and Fit
ModelVRAMScoreFit
Qwen2.5 Coder 1.5B
Q4_K_M·56.0 t/s
1.7 GBA82, Runs well
Q3_K_L·72.3 t/s
4.4 GBB59, Decent
Sweep Next Edit v2 7B
Q2_K·19.6 t/s
4.5 GBC30, Usable
Q2_K·62.9 t/s
4.1 GBA69, Runs well
IQ2_M·21.3 t/s
4.1 GBB48, Decent
IQ3_S·19.6 t/s
4.5 GBC30, Usable
Q3_K_M·19.1 t/s
3.8 GBB55, Decent
Yi 6B Chat
Q4_K_M·17.6 t/s
4.2 GBC38, Usable
Q2_K·19.6 t/s
4.5 GBC30, Usable
IQ2_M·21.9 t/s
4.1 GBB47, Decent
IQ2_XXS·28.0 t/s
4.4 GBC39, Usable
IQ3_S·16.0 t/s
4.5 GBD24, Barely runs
Qwen2.5 7B
IQ3_S·19.6 t/s
4.5 GBC30, Usable
Q3_K_M·33.2 t/s
4.3 GBB49, Decent
Medgemma 4B IT
Q3_K_M·31.0 t/s
4.5 GBC42, Usable

MacBook Air 13" M3 specs

Specs

Chip
M3
CPU cores
8
GPU cores
8
Unified memory
8 GB
For models
4.5 GB (macOS keeps 3.5 GB)
Memory bandwidth
102.4 GB/s
FP16 (dense)
5.6 TFLOPS
Neural Engine
18 TOPS
Released
2024-03-08

MacBook Air 13" M3 FAQ

How much memory is available for AI on the MacBook Air 13" M3 (8 GB)?

About 4.5 GB of the 8 GB. macOS keeps roughly 3.5 GB for itself and other apps.

What is the largest model the MacBook Air 13" M3 (8 GB) can run?

Qwen3.5 4B (4.7B) is the largest at 4-bit or better: at Q4_K_M it uses 3.4 GB, 76% of the available memory, and runs at about 22.0 tok/s.

Can the MacBook Air 13" M3 (8 GB) run 9B models?

No. Qwen3.5 9B needs 6.6 GB at Q4, more than the 4.5 GB available.

How long does the MacBook Air 13" M3 (8 GB) take to read a long prompt?

On Qwen3.5 4B, about 34 s for a 4K-token prompt and 4.5 min for a 32K-token document before the first word appears.

Is renting a GPU cheaper than buying the MacBook Air 13" M3?

An RTX 3080 Ti (12 GB) rents from $0.10/hr.