Can Grug 12B run on Pixel 8 Pro?
YES — Runs, barely
Grade C · 51/100 · formula estimate
What this means
Our estimate says Grug 12B should fit, but there is very little memory left for the operating system and other apps.
Download the Q4_K_S version, which is about 7.2 GB. We expect it to use about 9 GB of the roughly 9 GB available to a model on this phone.
At the estimated speed, a roughly 300-word answer may take about 2 minutes to finish.
This result is calculated from the phone and model specifications. It has not been measured on this exact phone and setup.
4.3tokens/s
estimated · reading pace
9GB
needed at Q4_K_S
Q4_K_S
quant checked
C
grade · 51/100
needs 9 GBusable 9 GB
Google Tensor G312 GB RAMCPU / GPU
Make it bearable
1
Drop context to 2K — saves ~0.4 GB of KV cache and a little speed.
2
Close every other app before loading — the 0 GB headroom is real; Android may kill the app otherwise.
3
Expect throttling after ~10 min of sustained generation on a phone chassis.
See how fast it feels
Estimated at 4.3 tokens/s — reading pace. A ~300-word reply takes about 93 seconds on this phone.
Where the memory goes
| Component | Detail | GB |
|---|---|---|
| Model weights | Q4_K_S GGUF (7.2 GB) + mmap overhead | 7.6 |
| KV cache | 4K context window | 0.8 |
| Runtime | llama.cpp + app overhead | 0.6 |
| Total needed | at Q4_K_S, 4K context | 9 |
| Usable on Pixel 8 Pro | 12 GB RAM − Android system reserve | 9 |
| Headroom | left for the OS and your other apps | 0 |
Pick your quant
| Quant | Download | Verdict | Speed |
|---|---|---|---|
| Q2_K | 5.1 GB | ! Runs, barely | ~6 tokens/s |
| Q3_K_M | 6.3 GB | ! Runs, barely | ~4.9 tokens/s |
| IQ4_XS | 6.8 GB | ! Runs, barely | ~4.5 tokens/s |
| Q4_0 | 7.1 GB | ! Runs, barely | ~4.3 tokens/s |
| Q4_K_S BEST HERE | 7.2 GB | ! Runs, barely | ~4.3 tokens/s |
| Q4_K_M | 7.7 GB | ✕ Won't fit | won't fit |
| Q5_K_M | 8.8 GB | ✕ Won't fit | won't fit |
| Q6_K | 10.2 GB | ✕ Won't fit | won't fit |
| Q8_0 | 12.7 GB | ✕ Won't fit | won't fit |
Get it running in 3 steps
1
Install PocketPal from Google Play — free, no account needed.
2
Download "Grug 12B Q4_K_S" in the in-app model hub — 7.2 GB, use Wi-Fi. Search Hugging Face for
bartowski/kai-os_Grug-12B-GGUF and pick the Q4_K_S file.3
Set context to 4K — expect ~4.3 tokens/s on this phone.
Related checks
More on Pixel 8 Pro
Grug 12B on other phones