---
language:
- kk
- ru
- en
license: mit
library_name: tokenizers
tags:
- kazakh
- tokenizer
- bpe
- morphology
- til
pretty_name: Til MorphoBPE 96K (kk/ru/en/code/math)
---

# Til-vocab-morphbpe-96k-kkrumix-v1

Byte-level BPE tokenizer (96 000 vocab) for the **Til** Kazakh foundation-model program. Kazakh-priority, with Russian, English, code and math coverage.

## Summary

- **Vocab size:** 96 000 (byte-level BPE, `tokenizers`).
- **Priority:** Kazakh-first; balanced kk/ru shares + en/code/math.
- **Special tokens:** `<pad>`=0, `<bos>`=1, `<eos>`=2.
- **Built on:** kaznu, from on-disk collected kk/ru (Til corpus exp053/054) + streamed en/code/math (FineWeb-Edu / code / math) — streaming avoids contention with the collectors.

## Fertility (tokens/word, lower = better)

| Lang | Fertility | Note |
|------|-----------|------|
| kk | 1.699 | ✅ target < 2.0 |
| ru | 1.619 | marginal (aspirational < 1.6; +0.019) |
| en | 1.355 | ✅ |

Raising the Russian vocab share dropped ru fertility 1.718 → 1.619 (kk:ru mix tuning).

## Usage

```python
from tokenizers import Tokenizer
tok = Tokenizer.from_file("tokenizer.json")
ids = tok.encode("Сәлеметсіз бе, әлем!").ids
```

## Part of the Til program

Companion corpora (same vocab): `Til-corpus-tokenized-multi-morphbpe96k-mvp100b-v1` (kk, 8.4B), `Til-corpus-tokenized-mix-morphbpe96k-v0` (ru/en/code/math, 12B), `Til-corpus-tokenized-kk-extra-v0` (0.83B), `Til-corpus-tokenized-kk-madlad-v0` (0.40B).

License: MIT.