clef-oQ3e

Updated 2026-10-29: Re-quantized with the improved oQe quantization in oMLX 0.7.3. Please re-download if you have an earlier copy.

This model was quantized using oQ (oMLX v0.7.3) mixed-precision quantization with improved oQe (jundot/omlx#4930).

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 3.903 bits/weight for the language backbone and 4.162 bits/weight for the complete checkpoint.

Quantization and Bit Distribution

oQ3e 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 3-bit, group 64 20.657B 75.158% 8.417 GiB 3.50
Affine 4-bit, group 64 2.939B 10.692% 1.539 GiB 4.50
Affine 5-bit, group 64 2.020B 7.351% 1.294 GiB 5.50
Affine 6-bit, group 64 1.277B 4.647% 0.966 GiB 6.50
Affine 8-bit, group 64 0.000B 0.001% 0.000 GiB 8.50
BF16 0.591B 2.152% 1.102 GiB 16.00
Total 27.485B 100% 13.318 GiB 4.162

Storage Breakdown

Component Logical weights Storage
Language backbone 26.896B 13.123 GB / 12.221 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 14.300 GB / 13.318 GiB

License

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

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