Phi-4 14B needs ~15.1 GB VRAM. MacBook Air M4 24GB has 17.3 GB. With Q4_K_M quantization, expect ~10 tok/s.
Operating mode
Interactive favors responsiveness, while light API and scale-out lean harder on serving readiness. The fit stays the same, but the recommendation lens changes.
Current mode
Balanced
Balanced for general local use. Keeps the ranking neutral across personal and serving workflows.
Select quantization to explore
Fit status
Tight fit
Decode
9.6 tok/s
TTFT
20228 ms
Safe context
16K
Memory
15.1 GB / 17.3 GB
This setup is broadly balanced for this model.
Shared-memory contention still exists
The OS, browser, and inference runtime all compete for the same physical memory pool, so real-world headroom is less forgiving than raw capacity suggests.
| Workload | Grade | Fit | Decode | TTFT | Context |
|---|---|---|---|---|---|
| Chat | A | Runs well | 9.6 tok/s | 11034 ms | 16K |
| Coding | A | Tight fit | 9.6 tok/s | 20228 ms | 16K |
| Agentic Coding | A | Runs with offload (needs ~0.4 GB host RAM) | 8.7 tok/s | 32223 ms | 16K |
| Reasoning | A | Tight fit | 9.6 tok/s | 23906 ms | 16K |
| RAG | A | Runs with offload (needs ~0.4 GB host RAM) | 8.7 tok/s | 40278 ms | 16K |
How Phi-4 14B (14B params) fits at each quantization level on MacBook Air M4 24GB (17.3 GB usable).
| Quant | Bits | VRAM | Quality | Fit |
|---|---|---|---|---|
Q2_K | 2 | 5.5 GB | Low | A80 |
Q3_K_S | 3 | 6.9 GB | Low | A81 |
NVFP4 | 4 | 7.8 GB | Medium | A82 |
Q4_K_M | 4 | 8.5 GB | Medium | A83 |
Q5_K_M | 5 | 10.1 GB | High | A83 |
Q6_KBest for your GPU | 6 | 11.5 GB | High | A82 |
Q8_0 | 8 | 15.0 GB | Very High | F0 |
F16 | 16 | 28.7 GB | Maximum | F0 |
Copy-paste commands to run Phi-4 14B on your machine.
Run
ollama run phi4Your hardware
| Model | Params | Grade | Decode | Capabilities |
|---|---|---|---|---|
 Magistral Small 2507 | 24B | A | 7.3 tok/s | |
| Devstral Small 2 24B Instruct | 24B | A | 7.3 tok/s | |
 Phi-4-reasoning-plus 14B | 14.7B | S | 9.4 tok/s | |
| Devstral Small 1.1 | 24B | B | 7.3 tok/s | |
 GPT-OSS 20B | 21B | A | 14.4 tok/s |
Yes, MacBook Air M4 24GB can run Phi-4 14B with a A grade (Tight fit). Expected decode speed: 9.6 tok/s.
Phi-4 14B (14B parameters) requires approximately 15.1 GB of memory with Q4_K_M quantization.
The recommended quantization for Phi-4 14B is Q4_K_M, which balances quality and memory efficiency.
On MacBook Air M4 24GB, Phi-4 14B achieves approximately 9.6 tokens per second decode speed with a time-to-first-token of 20228ms using Q4_K_M quantization.
For coding workloads, Phi-4 14B on MacBook Air M4 24GB receives a A grade with 9.6 tok/s and 16K context.
On MacBook Air M4 24GB, Phi-4 14B can safely use up to 16K tokens of context. The model's official context limit is 16K, but available memory constrains the safe maximum.
Not always. MacBook Air M4 24GB can often fit larger models thanks to unified memory, but a discrete GPU with dedicated high-bandwidth VRAM may still decode faster once the model fits. For this combination, the important distinction is capacity versus sustained throughput.
Paste this snippet into any page to show a live fit card.
<iframe src="https://willitrunai.com/embed/phi-4-14b-on-m4-air-24gb" width="400" height="180" frameborder="0" style="border:none;border-radius:12px;overflow:hidden;" title="Will It Run AI — fit result"></iframe>
Preview: