clef-oQ4e

Updated 2026-10-11: Re-quantized with Improved oQe Quantization. Please re-download if you have an earlier copy.

This model was quantized using oQ (oMLX v0.7.1) mixed-precision quantization with Improved oQe Quantization (jundot/omlx#4385).

A mixed-precision MLX checkpoint of Cloudflare/clef, a 27B decision model post-trained from Qwen/Qwen3.8-27B that turns a state and a schema of typed questions into decisions, returning a probability for every allowed option of every question in a single forward pass. It includes the Qwen3.8-27B language backbone, the vision encoder and the joint schema head.

The joint schema head (joint_head.safetensors, joint_head_config.json) is copied unchanged from the source. oMLX serves this checkpoint through POST /v1/systemone.

The effective average is 4.936 bits/weight for the complete checkpoint.

Quantization and Bit Distribution

oQ4e allocates bits by measured layer sensitivity, then rounds each group with an importance matrix (128 samples x 512 tokens) and a weighted least-squares refit of its scale and bias.

Storage format Logical weights Share of total Tensor storage Effective bits/weight
Affine 4-bit, group 64 22.986B 83.633% 12.042 GiB 4.50
Affine 5-bit, group 64 2.636B 9.589% 1.687 GiB 5.50
Affine 6-bit, group 64 1.271B 4.626% 0.962 GiB 6.50
BF16 0.591B 2.152% 1.102 GiB 16.00
Total 27.485B 100% 15.793 GiB 4.936

Storage Breakdown

Component Logical weights Storage
Language backbone 26.896B 15.780 GB / 14.696 GiB
Vision encoder 0.461B 0.921 GB / 0.858 GiB
Joint schema head 0.128B 0.256 GB / 0.239 GiB
Total 27.485B 16.958 GB / 15.793 GiB

License

Apache-2.0, following the source model. See LICENSE.

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