| --- |
| pretty_name: Ralph sub2 physical-iPhone device lab |
| license: other |
| language: |
| - en |
| tags: |
| - on-device-llm |
| - iphone |
| - gguf |
| - llama-cpp |
| - metal |
| - benchmark |
| configs: |
| - config_name: default |
| data_files: |
| - split: test |
| path: matrix.csv |
| --- |
| |
| # The same model. Small enough to sit on your phone. |
|
|
| **One configured 2.94 GB Round 7 sub2 crown. Four physical iPhones. Four open |
| receipts.** Each phone loaded the model and completed the same normal PocketPal |
| chat prompt through the local llama.cpp Metal runtime. |
|
|
|  |
|
|
| [Watch the 30-second desktop cut](social/ralph-sub2-four-physical-iphones-horizontal.mp4) |
| · [Watch the 30-second vertical cut](social/ralph-sub2-four-physical-iphones-vertical.mp4) |
| · [Watch the 15-second vertical teaser](social/ralph-sub2-four-physical-iphones-teaser-15s.mp4) |
| · [Download the model](https://huggingface.co/RalphLabsAI/ralph-crowns/blob/main/ralph-qwen3-8b-sub2.gguf) |
| · [Inspect the machine-readable matrix](matrix.json) |
| · [Verify every file](SHA256SUMS) |
| · [Read licensing and attribution](ATTRIBUTION.md) |
|
|
| ## Normal PocketPal chat |
|
|
| | Physical device | OS | Chat speed | TTFT | Result | |
| |---|---|---:|---:|---| |
| | iPhone 15 | iOS 26.6 | 10.58 tok/s | 838 ms | Completed | |
| | iPhone 16 | iOS 18.6 | 12.36 tok/s | 439 ms | Completed | |
| | iPhone 17 | iOS 26.6 | 16.77 tok/s | 427 ms | Completed | |
| | iPhone 17 Pro Max | iOS 26.6 | 18.54 tok/s | 400 ms | Completed | |
|
|
| These values come from PocketPal's normal-chat timing footer. They are separate |
| from the controlled `pp` and `tg` benchmark values preserved in `matrix.json` |
| and must not be substituted for them. |
|
|
| The fixed prompt was: |
|
|
| > In two sentences, explain how lower-bit weights reduce memory use without |
| > changing a model's architecture. |
|
|
| All four responses, timing footers, benchmark screenshots, and untouched |
| device-screen recordings are included. PocketPal displayed **Memory tight** on |
| all four devices; the warning is intentionally visible in the evidence. |
|
|
| ## Artifact identity |
|
|
| | Field | Value | |
| |---|---| |
| | Repository | `RalphLabsAI/ralph-crowns` | |
| | Filename | `ralph-qwen3-8b-sub2.gguf` | |
| | Size | 2,937,263,168 bytes (2.94 GB decimal) | |
| | Expected SHA-256 | `9c45bf0ac486e793bd761a99ce4b9d965ec12e70f2d420e02af16797c71f6b50` | |
| | Crown | Ralph Round 7 sub2 | |
| | Profile | Q2_K-led mixed quantization | |
| | Winning builder | [boweizh1204](https://huggingface.co/boweizh1204) | |
| | Source artifact | [`boweizh1204/ralph-qwen3-8b-sub2-qat5`](https://huggingface.co/boweizh1204/ralph-qwen3-8b-sub2-qat5) | |
| |
| The expected digest was recomputed against Ralph's local mirror while preparing |
| the test build. It was **not computed on-device**. The model weights are not |
| redistributed in this dataset; download them from the linked model repository. |
| |
| ## What was tested |
| |
| - BrowserStack App Automate physical iPhones, one cloud-device session per row |
| - PocketPal 1.17.3 (build 147), test-only device-lab build |
| - PocketPal source commit `6683a28876d031484cc72dde251b6139a804ad64` |
| - Context 2,048; GPU backend requested; Metal execution observed as `MTL0` |
| - Controlled benchmark: pp=128, tg=32, parallel=1, repeats=3, mmap enabled |
| - Network connected throughout each run |
| |
| `PHYSICAL_DEVICE_PROOF.md` records how the selected App Automate catalog entries |
| were checked as physical devices. Each directory under `devices/` contains a |
| human-readable receipt, three screenshots, and the untouched screen recording. |
| The `social/` directory contains clearly identified edits derived from those |
| receipts. |
| |
| ## Claim boundary |
| |
| These runs show that the configured Ralph sub2 model loaded and generated |
| through PocketPal's local llama.cpp Metal runtime on the four recorded physical |
| cloud devices, at the displayed one-session speeds. |
| |
| They do **not** establish: |
| |
| - App Store memory-fit certification or required device RAM; |
| - airplane-mode or offline operation; |
| - universal iPhone compatibility or typical repeated-run performance; |
| - an on-device SHA-256 match; or |
| - broad model quality from one fixed prompt. |
| |
| BrowserStack re-signing strips PocketPal's increased-memory-limit and |
| extended-virtual-addressing entitlements. The devices remained connected, the |
| runs were not thermally normalized, and observed peak memory is a harness |
| observation rather than a hardware requirement. |
| |
| “The same model” means the same admitted Qwen3-8B architecture and parameter |
| structure—not identical weights, guaranteed identical behavior, or universal |
| phone compatibility. |
| |
| ## Verify the receipt set |
| |
| ```bash |
| hf download RalphLabsAI/ralph-device-lab \ |
| --repo-type dataset \ |
| --local-dir ralph-device-lab |
| cd ralph-device-lab |
| sha256sum -c SHA256SUMS |
| ``` |
| |
| The publisher regenerates `SHA256SUMS` from the exact public payload and commits |
| the card, records, media, and integrity manifest under one protected Hub parent. |
| |
| ## Build on the evidence |
| |
| Try the same artifact and report both successes and failures. Include your |
| device, OS, PocketPal version, exact filename, context, load result, timing |
| footer if shown, and a screenshot or recording. Do not include account details, |
| serial numbers, notifications, or private device information. |
| |
| Ralph is an open model-compression tournament on Bittensor SN40. The model card, |
| signed round record, licenses, notices, and builder credit remain with the |
| [Ralph crowns repository](https://huggingface.co/RalphLabsAI/ralph-crowns). |
| |
