EXQ12 deployment format

model.q12 is produced deterministically from the published EXLLM8 file by tools/export_exq12.py. It contains the same 39 tensors in the order stored by EXLLM8. The EX-word runtime uses integer matrix weights and fixed-point scales; the file is not GGUF and is not interchangeable with EXLLM8.

Header

8 bytes: EXQ12\0\0\0
little-endian uint32: format version (1)
little-endian uint32: tensor count (39 for the 5M release)

Each tensor record contains a little-endian uint16 name length, uint8 dimension count, uint8 qtype, UTF-8 name bytes, uint32 dimensions, uint32 scale count, uint32 payload byte count, optional scale data, and the payload.

qtype 1: signed int8 matrix payload; one signed Q20 int32 scale per row.
qtype 3: signed Q12 int16 vector payload; no separate scale table.

Reproduce the release artifact

python tools/export_exq12.py

Expected result:

bytes: 5443105
sha256: d64037fde791e5c0e48101bc1a8ab366a3287f1f36b4464879e36495ea7e5a53
tensors: 39