---
license: apache-2.0
tags:
- tokenizers
- BPE
- sentencepiece
- code-generation
---

# cofos_tokenizer

Specialized SentencePiece BPE tokenizer for the **cofos** programming and logic
language model.

## Configuration
- Vocabulary size: **16384**
- Model type: BPE
- Byte fallback: enabled
- Digit splitting: enabled (digits 0-9 are guaranteed atomic)
- Whitespace normalization: disabled (`identity` rule) — indentation preserved

## Special atomic tokens
Keywords (`def`, `class`, `fn`, `struct`, `impl`, `return`, `async`, …),
operators (`==`, `!=`, `=>`, `->`, `::`, `///`, …) and structural tags
(`<python>`, `<code>`, `<explanation>`, …) are all guaranteed single tokens.

## Usage
```python
import sentencepiece as spm
sp = spm.SentencePieceProcessor()
sp.Load("cofos_tokenizer.model")
print(sp.EncodeAsPieces("def hello():\n    return 42"))
```