| --- |
| license: apache-2.0 |
| tags: |
| - kev |
| - systemone |
| - safetensors |
| --- |
| |
| # Kev heads (pickle-free safetensors) |
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| Converted pointer heads for [Kev](https://github.com/jaredpalmer/kev) decision models, for runtimes that must not execute PyTorch pickle files. |
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| Upstream Kev ships each head as `head.pt`, a PyTorch pickle. This repository holds the same tensors as `head.safetensors`, plus `head.meta.json` with the temperature and metadata. [kev-rs](https://github.com/codesoda/kev-rs) reads only these files. [SystemOne](https://github.com/codesoda/systemone) `s1 setup` downloads them together with the pinned base model and LoRA adapter. |
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| Nothing here is retrained or changed. The conversion copies tensors and metadata only. |
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| ## Files |
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| | Checkpoint | Source adapter (with `head.pt`) | Source `head.pt` SHA-256 | Base model | |
| | --- | --- | --- | --- | |
| | `kev-0.6b` | [jaredpalmer/kev-0.6b](https://huggingface.co/jaredpalmer/kev-0.6b) @ `dece6dba8d43` | `ce6cd9ffc54db41c…` | [Qwen/Qwen3-0.6B-Base](https://huggingface.co/Qwen/Qwen3-0.6B-Base) @ `da87bfb608c1` | |
| | `kev-0.8b` | [jaredpalmer/kev-0.8b](https://huggingface.co/jaredpalmer/kev-0.8b) @ `54f4f8777356` | `39f4343ccccc65e5…` | [Qwen/Qwen3.5-0.8B-Base](https://huggingface.co/Qwen/Qwen3.5-0.8B-Base) @ `dc7cdfe2ee41` | |
| | `kev-4b` | [jaredpalmer/kev-4b](https://huggingface.co/jaredpalmer/kev-4b) @ `485ace870359` | `d8f796da36ff7bd7…` | [Qwen/Qwen3.5-4B-Base](https://huggingface.co/Qwen/Qwen3.5-4B-Base) @ `1001bb4d826a` | |
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| Each directory holds `head.safetensors` and `head.meta.json`. `SHA256SUMS` lists every file. |
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| ## Provenance |
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| - Upstream: [jaredpalmer/kev](https://github.com/jaredpalmer/kev) @ `557598fced1dada75dfbf36ed144dce309ac6ceb` (Apache-2.0). |
| - Converter: `kev-convert-head` in kev-rs `benchmarks/baseline`, kev-rs [`v0.1.1`](https://github.com/codesoda/kev-rs/releases/tag/v0.1.1). The expected output checksums are recorded in kev-rs `manifests/sources.json`. |
| - kev-rs checks its Rust runtime against frozen upstream PyTorch and MLX outputs that use these heads. |
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| ## License |
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| Apache-2.0, the same as upstream Kev, its adapters and the Qwen3 / Qwen3.5 base models. Not affiliated with Kev's authors or with TypeSafe AI. |
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