---
license: apache-2.0
base_model: PeetPedro/kompress-v3
tags:
- token-classification
- compression
- context-compression
- headroom
language:
- en
---

# kompress-v4 — Override Internalized (legacy)

The model that proved must-keep overrides can be internalized through self-labeling. Override delta collapsed to 0.000 — the model learned to keep critical tokens without explicit regex rules. **Former production model. Now superseded by [kompress-v8](https://huggingface.co/PeetPedro/kompress-v8) (+0.012 heretic).**

## Results

| Metric | v3 | **v4** | v8 (current) |
|---|---|---|---|
| heretic exact (32p) | 0.942 | 0.943 | **0.955** |
| keep_rate | 0.728 | 0.823 | 0.854 |
| override_delta | +0.027 | **0.000** | 0.000 |

## Usage

```python
from headroom import compress, CompressConfig
result = compress(messages, config=CompressConfig(kompress_model="PeetPedro/kompress-v4"))
```

**[Use v8 instead →](https://huggingface.co/PeetPedro/kompress-v8)**


## CONCLUSION

Override internalized through self-labeling. Override delta collapsed to 0.000 — breakthrough. Former production model.

## USECASE

Legacy production. Superseded by v8 (+0.012 heretic). Use v8 instead.

[Full benchmark →](https://pocoo.vaked.dev/posts/2026-06-25-kompress-heretic-eval) | [Training repo →](https://github.com/peterlodri-sec/ultrawhale) | [Headroom →](https://github.com/headroomlabs-ai/headroom) | [vaked.dev →](https://pocoo.vaked.dev)