YokoCoder-4B / README.md
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---
license: apache-2.0
base_model: wangzhang/Qwen3.5-4B-abliterated
pipeline_tag: text-generation
library_name: gguf
tags:
- gguf
- qwen3.5
- code
- coding
- abliterated
- ollama
language:
- en
---
# YokoCoder-4B
YokoCoder-4B is a compact, locally runnable coding assistant built on the abliterated Qwen3.5 4B model. It was fine-tuned for coding, further trained on Flappy Bird examples, and continued for five more epochs on a new coding dataset. It builds on the author's checkpoint that passed the Flappy Bird game-generation test. This five-epoch release was tested in Ollama and passed a three-case Python function smoke test, offering practical coding value for its size.
## Model details
- **Format:** GGUF, Q4_K_M
- **Parameters:** 4B
- **Download size:** about 2.7 GB
- **Base:** [wangzhang/Qwen3.5-4B-abliterated](https://huggingface.co/wangzhang/Qwen3.5-4B-abliterated), derived from Qwen3.5-4B
- **Training:** coding fine-tune, three additional epochs on Flappy Bird examples, then five additional epochs on 12 coding examples (28 training windows)
- **License:** Apache 2.0
## Run with Ollama
Download the files in this repository, then run the following from their directory:
```bash
ollama create yokocoder-4b -f Modelfile
ollama run yokocoder-4b
```
The included Modelfile configures a 16,384-token context and sets `num_predict -1` for generation without a fixed output-token cap. The GGUF can also be used with other compatible Qwen3.5 GGUF runtimes.
## Attribution
YokoCoder-4B is a fine-tuned and quantized derivative of [Qwen3.5-4B-abliterated](https://huggingface.co/wangzhang/Qwen3.5-4B-abliterated) by Wangzhang Wu, based on [Qwen3.5-4B](https://huggingface.co/Qwen/Qwen3.5-4B). The original model card and notices are included in [UPSTREAM_MODEL_CARD.md](UPSTREAM_MODEL_CARD.md), and the license is in [LICENSE](LICENSE).
## Latest training update
The October 29, 2026 update continues the existing YokoCoder checkpoint for five epochs, completing 20 optimizer steps with training loss 1.0559. The Q4_K_M file contains the merged updated weights. The continued-training LoRA adapter and its training records are included under `adapters/dataset4-5epochs/`. Export hashes and provenance are in `export_manifest_5epochs.json`.
The local generation check and model identity are recorded in [ollama_smoke_test_5epochs.json](ollama_smoke_test_5epochs.json).