gemma-4-26b-a4b-it-hfq4g128-tailfix

Gemma 4 26B-A4B-it — Hipfire HFQ4 tail-safe artifact

This repository contains a text-only Hipfire HFQ artifact converted locally from the Google Gemma 4 26B-A4B-it BF16 checkpoint. It is not an official Google quantization and was not produced or released by the Hipfire maintainers.

Source and conversion

• Canonical base model: google/gemma-4-26B-A4B-it
• Downloaded snapshot: https://modelscope.cn/models/google/gemma-4-26B-A4B-it
• Source config.json SHA-256: ed0c1eb3633de771906e9ba004a44cc5635bcc06ee2062077c3d2e88a50707d3
• Source model.safetensors.index.json SHA-256: 907826a6e46ff454272bd6db1fee629d5531a2303be22986d825a0871d7dc7a7
• Converter: hipfire-quantize 0.3.0 at Hipfire commit 27f333ff1
• Command:

HIPFIRE_GIT_COMMIT=27f333ff1 hipfire-quantize \
  --input /path/to/google-gemma-4-26B-A4B-it \
  --output gemma-4-26b-a4b-it.hfq4g128-tailfix.hf4 \
  --format hf4 \
  --arch-id 13 \
  --source-url https://modelscope.cn/models/google/gemma-4-26B-A4B-it \
  --license LicenseRef-Gemma

The output embeds this source URL, license reference, format, tool version, and converter commit in hipfire_provenance.

Artifact identity

• File: gemma-4-26b-a4b-it.hfq4g128-tailfix.hf4
• Size: 15,632,064,572 bytes
• SHA-256: ccd0eb6881d170829a1d9d092b73a0956025548c34fbad3438f588488f0b2634
• Architecture ID: 13 (gemma4)
• Tensor count: 8,277

Deterministic recipe census:

The G128 records preserve ragged expert rows that cannot be represented safely as complete G256 groups. The quantizer reported mean quantization error 0.00003919 and maximum quantization error 0.04241335.

The vision/auxiliary tensors were not included: the converter reported 572,794,416 skipped parameters. This artifact is intended for Hipfire's text-generation Gemma4 lowered/MoE path, not multimodal inference.

Validation scope

The weight payload is byte-identical to the earlier local tail-safe artifact used for Hipfire PR #667 validation; only the HFQ metadata region changed to add provenance. That payload passed Hipfire Redline HIP/PM4 parity and user-facing serve batteries on gfx1100 (Radeon Pro W7900) and gfx1201 (Radeon AI Pro R9700). Those results are commit- and runtime-specific evidence, not a general quality or performance guarantee.

Use of this artifact remains subject to the Gemma license and terms associated with the base model.