| # bend-heads · support map (no weights yet) | |
| **One model per size. Heads swap on the same loaded copy.** A head is not a model: it is the small interface that turns a loaded base model into a *mode* (structured decisions of a given family). Pick a size model (`bend-4b`, …), pick a head, switch modes without reloading anything. This repo holds no weights yet; it is the map. | |
| ## The heads | |
| - **`kev-native`**: ships with `bend-4b`; the base's own decision mode. Chat + decisions from one load. *Status: native. Kev on the phone/Mac engine: the same decision request, 12 runs, byte-identical. A Kev session mixing chat and decisions has not been gated yet.* | |
| - **`clef-flash`**: Cloudflare's Clef family. Runs **end-to-end on the Bend engine** (parity |Δp| 0.0092 vs reference after one wire fix). *Status: wired; GPU path int8 ≤0.013, top-1 24/24; MLX path runs. Clef Flash 9B · RTX 3090 · SYS1-DUAL: 28/28 decisions byte-identical over 24 goldens with chat in the same process; one process, 6,491 vs 12,597 MiB card memory vs two resident engines.* | |
| - **`jev-r2`**: TypeSafe's Jev family. **313/313 byte-precise runs** (max |dp| 2.2e-6). *Status: wired.* | |
| - **`clef-omni`**: Cloudflare's omni release (2026-10-09). *Status: not yet run here; in queue.* | |
| Results on one head are not results for another; each figure above is labelled with the model it was measured on. | |
| ## The rule | |
| A head in the **wired shape** (a trained interface over a supported base, Qwen-family bases included) is the shape the runtime already loads. A genuinely new head *architecture* needs a port. The parity receipts above are the gate: a head is "listed" when its runs are checkable. | |
| See `SUPPORT-MAP.md` for the source-labeled map. | |