How fast does Qwen 2.5 3B run on iPhone?
On an iPhone Air (A19, iOS 26.6.1), Qwen 2.5 3B generated 26.3 tokens per second in Pocket AI Lab 1.1.0, averaged over 3 runs of 200 tokens (± 2.8).
On the standard llama-bench style probe it read a 512-token prompt at about 249 tok/s and generated 128 tokens at 22.4 tok/s. Cold load took 1.7 s and the process peaked at 2,360 MB.
How much memory and storage does Qwen 2.5 3B need?
The catalog budgets 2.2 GB of RAM and 2.0 GB of storage for the 4bit build of Qwen 2.5 3B. The measured peak footprint on iPhone Air was 2,360 MB.
Its backend copies weights into the app's memory, so the app checks it against the per-app limit iOS enforces. On a 6 GB iPhone that limit is much lower than 6 GB.
Which iPhones can run Qwen 2.5 3B?
Qwen 2.5 3B runs on iPhones with 6 GB of RAM or more.
| RAM | iPhones | Pocket AI Lab |
|---|---|---|
| 3–4 GB | iPhone 11, 11 Pro, 12, 12 mini, 13, 13 mini, SE (2nd and 3rd gen) | Not measured yet |
| 6 GB | iPhone 12 Pro, 13 Pro, 14, 14 Plus, 14 Pro, 15, 15 Plus | ✓ Runs |
| 8 GB | iPhone 15 Pro, 16, 16 Plus, 16 Pro, 16e, 17, 17e | ✓ Runs |
| 12 GB | iPhone 17 Pro, 17 Pro Max, iPhone Air | ✓ Runs |
Based on the memory budgets the app measures on each class of iPhone (October 2026). Before downloading, the app checks your exact phone and only offers what fits.
What can Qwen 2.5 3B do in Pocket AI Lab?
It's a text model for chat, drafting, summaries and quick questions, fully offline once downloaded.
How did Qwen 2.5 3B score on the quality suite?
It passed 65 of 118 tasks, a score of 55.1 out of 100 on suite v3.
Tasks are graded by deterministic checks (exact numbers, regex, word counts, valid JSON), with greedy decoding. See the method.
All runs of Qwen 2.5 3B
| Model | Gen tok/s | pp512 / tg128 | Load s | Peak MB | Score | Date |
|---|---|---|---|---|---|---|
| Qwen 2.5 3B | 24.5 ± 1.7 | ~241 / 21.7 | 1.2 | 2,345 | 69.6 | 2026-09-03 |
| Qwen 2.5 3B | 30.8 ± 2.3 | ~239 / 29.4 | 0.7 | 2,332 | 69.6 | 2026-09-04 |
| Qwen 2.5 3B | 26.3 ± 2.8 | ~249 / 22.4 | 1.7 | 2,360 | 55.1 | 2026-10-22 |
Other Qwen models in the catalog
- Qwen 2.5 14B, MLX, 4bit
- Qwen2-VL 7B (Vision), MLX, 4bit, 11.6 tok/s (throttled)
- Qwen 3.5 0.8B (GGUF, Vision), llama.cpp, Q4_K_M, 73.7 tok/s
- Qwen 3.5 2B (GGUF, Vision), llama.cpp, Q4_K_M, 36.6 tok/s
- Qwen 3.5 4B (GGUF, Vision), llama.cpp, Q4_K_M, 14.7 tok/s (throttled)
- Qwen2.5 1.5B (Core ML), Core ML, int8-W8A16, 3.0 tok/s
How do I install Qwen 2.5 3B?
Open the Models tab in Pocket AI Lab and tap Qwen 2.5 3B. The app checks it against your phone's memory, downloads 2.0 GB from Hugging Face and it's ready for offline chat.