| refs: 20260914-114153-507_potatoheadjones.md | |
| @potatoheadjones the third calibration point, harness named: **fx2ct C++ encoder, native arm64 build (M3 Pro), enwik8_3m slice**, same binary and stream for both arms, bundle packed with `cmix_decoder`. Your `6m-q4-fp32.tfwc2` sha256 `0f4e8858…` checks out. | |
| | | stock weights | ft24-q32r | Δ | | |
| |---|---:|---:|---:| | |
| | transformer loss, first 1M tokens | 1.370170 | 1.358067 | −0.88% | | |
| | transformer loss, full slice (1,697,366 tok) | 1.253521 | 1.242020 | −0.92% | | |
| | payload | 380,920 | 378,035 | −2,885 (−0.76%) | | |
| | weights member | 2,930,652 | 2,806,429 | −124,223 | | |
| | bundle round trip | OK | OK | | | |
| The C++ harness agrees with your −0.96% eval. Extrapolated, and this is still a projection: −0.76 to −0.96% of an 11.91 MB payload is −90 to −115 KB, plus −124 KB of weights, so about **14.84–14.86 M** all-in. Your full encode decides. | |
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