UnimeType Transliteration 2.0 9B โ€” v2.6 (12-Language Offline IME Engine ยท GGUF Q4_K_M & Q8_0)

Current Release: v2.6 (dataset_v5.1 ยท 12 Languages / 13 Modes + Blind-Typing Typo Recovery) ยท Protocol: unimetype-convert-short-v3 (0 system-prompt tokens, 100% drop-in compatible with all Transliteration-2.0 clients)

UnimeType gives you one keyboard for all your languages โ€” no switching keyboards across apps or mid-sentence. Keep a clean ASCII layout for single-key shortcuts in Figma or Blender, LaTeX commands in Overleaf, WASD controls in games, Terminal/IDE workflows, and switching between Slack, Mail, WhatsApp, WeChat, or LINE, then convert romanized text in-place only when you want native script.

UnimeType Transliteration 2.0 9B (v2.6) is a deterministic on-device input-method transliteration engine fine-tuned from unquantized BF16 Qwen/Qwen3.5-9B. It converts romanized or ASCII-typed input across 12 languages (13 output modes) โ€” Chinese Pinyin, Japanese Romaji (natural & kana), Hindi Hinglish, Arabic Arabizi, Russian, Greek, Vietnamese, Spanish, French, Portuguese, German, and Italian โ€” while keeping inline English terms, @handles, URLs, code spans, file paths, numbers, and line breaks untouched.


Official v2.6 Model Family (0.8B ยท 4B ยท 9B)

Tier & Footprint Apple Silicon (MLX 6-bit) PyTorch / vLLM (BF16 Safetensors) llama.cpp / LM Studio / Ollama (GGUF)
0.8B ยท Ultra-light mobile & browser WASM (~0.5โ€“0.7 GB) MLX 6-bit BF16 Safetensors GGUF Q4_K_M & Q8_0
4B ยท Balanced everyday desktop IME (~2.6โ€“3.5 GB) MLX 6-bit BF16 Safetensors GGUF Q4_K_M & Q8_0
9B ยท Flagship offline accuracy (~5.6โ€“7.4 GB, beats cloud on Core-5) MLX 6-bit BF16 Safetensors GGUF Q4_K_M & Q8_0 (this repo)

Included GGUF Quantizations

Filename Quantization Recommended Use
Transliteration-2.0-9B-Convert-Q4_K_M.gguf Q4_K_M (4-bit k-quant) Best speed / RAM balance for laptops, mobile runtimes, and WebAssembly
Transliteration-2.0-9B-Convert-Q8_0.gguf Q8_0 (8-bit near-lossless) Maximum quantization fidelity for desktop LM Studio, llama.cpp, and Ollama

What's New in v2.6

  1. 12 Languages / 13 Output Modes with Zero System Prompt: Expands from 4 languages (zh, ja, hi, ar) to 12 languages (chinese, japanese natural & kana, hindi, arabic, russian, greek, vietnamese, spanish, french, portuguese, german, italian) using a single-line compact JSON user message and an empty system prompt (0 prompt-prefix overhead).
  2. New 9B Flagship Offline Tier Surpasses Cloud on Core Benchmarks: Transliteration-2.0-9B reaches 92.09% strict accuracy on the 708-case v4-aligned suite (+1.27 pp ahead of DeepSeek V4.1 Flash with a ~2,800-token production system prompt) and 90.94% on Core-5 (+0.64 pp ahead of cloud), while matching cloud accuracy on Dogfood-30 (76.7%) and OOD-Unseen-20 probe repair (90.0%, 18/20).
  3. Blind-Typing Adjacent-Key Typo Repair & Glossary Precision: Recovers realistic fast-typing transpositions (e.g., shujuuk โ†’ ๆ•ฐๆฎๅบ“, yanchanghiu โ†’ ๆผ”ๅ”ฑไผš, yanuhuo โ†’ ้ชŒ่ดง), honors dynamic lexicon contact/brand entries without false-positive homophone hijacking, and cleanly emits UNIMETYPE_NO_ALTERNATIVE when closed-set reconvert alternatives are exhausted.
  4. Unconditional Non-Thinking Chat Template: Ships with <|im_start|>assistant\n<think>\n\n</think>\n\n baked into chat_template.jinja across MLX, Safetensors, and GGUF so LM Studio, mlx-lm, and llama.cpp emit converted text on the very first token with zero reasoning-token latency.

Quickstart: unimetype-convert-short-v3 Compact JSON Protocol

Usage Note: This checkpoint is a specialized IME conversion engine, not an open-ended chatbot. Send a compact JSON object as the user message with empty System Prompt and temperature: 0, or pair LM Studio / Ollama directly with the UnimeType Keyboard App for system-wide Caps Lock / Convert key replacement in any app.

Scenario (1 Native Language + English) user Message JSON (content) Direct assistant Output
Chinese + English (zh) {"operation":"convert","input":"qing xian zai staging huanjing pao yi bian suoyou unit test, queren API latency meiyou shenggao zhi hou, women zai anpai production deploy","enabled_languages":["chinese","english"],"primary_language":"chinese"} ่ฏทๅ…ˆๅœจ staging ็Žฏๅขƒ่ท‘ไธ€้ๆ‰€ๆœ‰ unit test, ็กฎ่ฎค API latency ๆฒกๆœ‰ๅ‡้ซ˜ไน‹ๅŽ, ๆˆ‘ไปฌๅ†ๅฎ‰ๆŽ’ production deploy
Japanese + English (ja) {"operation":"convert","input":"staging kankyou de atarashii API endpoint no dousa wo kakunin shite kara, mondai ga nakereba ban-gohan no ato ni production deploy shimasu","enabled_languages":["english","japanese"],"primary_language":"japanese","japanese_output_style":"natural"} staging ็’ฐๅขƒใงๆ–ฐใ—ใ„ API endpoint ใฎๅ‹•ไฝœใ‚’็ขบ่ชใ—ใฆใ‹ใ‚‰, ๅ•้กŒใŒใชใ‘ใ‚Œใฐๆ™ฉใ”้ฃฏใฎๅพŒใซ production deploy ใ—ใพใ™
Hindi + English (hi) {"operation":"convert","input":"maine GitHub par naya PR open kar diya hai, aap ek baar code review kar lijiye, phir hum shaam ko staging server par deploy karenge","enabled_languages":["english","hindi"],"primary_language":"hindi"} เคฎเฅˆเค‚เคจเฅ‡ GitHub เคชเคฐ เคจเคฏเคพ PR open เค•เคฐ เคฆเคฟเคฏเคพ เคนเฅˆ, เค†เคช เคเค• เคฌเคพเคฐ code review เค•เคฐ เคฒเฅ€เคœเคฟเค, เคซเคฟเคฐ เคนเคฎ เคถเคพเคฎ เค•เฅ‹ staging server เคชเคฐ deploy เค•เคฐเฅ‡เค‚เค—เฅ‡
Arabic + English (ar) {"operation":"convert","input":"ana 7a2a3od fel office l7ad el sa3a 8 3ashan a5allas el deployment, law 3andak ay update eb3atli 3ala Slack aw WhatsApp","enabled_languages":["arabic","english"],"primary_language":"arabic"} ุฃู†ุง ู‡ู‚ุนุฏ ููŠ ุงู„ office ู„ุญุฏ ุงู„ุณุงุนุฉ 8 ุนุดุงู† ุฃุฎู„ุต ุงู„ deployment, ู„ูˆ ุนู†ุฏูƒ ุฃูŠ update ุงุจุนุชู„ูŠ ุนู„ู‰ Slack ุฃูˆ WhatsApp
Russian + English (ru) {"operation":"convert","input":"pozhaluista prover novyi Docker build na staging pered tem kak my nachnem release","enabled_languages":["english","russian"],"primary_language":"russian"} ะฟะพะถะฐะปัƒะนัั‚ะฐ ะฟั€ะพะฒะตั€ัŒ ะฝะพะฒั‹ะน Docker build ะฝะฐ staging ะฟะตั€ะตะด ั‚ะตะผ ะบะฐะบ ะผั‹ ะฝะฐั‡ะฝะตะผ release
German + English (de) {"operation":"convert","input":"koennen wir das API Gateway fuer den neuen Docker Container heute noch ueberpruefen","enabled_languages":["english","german"],"primary_language":"german"} kรถnnen wir das API Gateway fรผr den neuen Docker Container heute noch รผberprรผfen
curl http://127.0.0.1:1234/v1/chat/completions \
  -H "Content-Type: application/json" \
  -d '{
    "model": "UnimeType/Transliteration-2.0-9B-GGUF",
    "temperature": 0,
    "max_tokens": 256,
    "messages": [
      {
        "role": "user",
        "content": "{\"operation\":\"convert\",\"input\":\"mingtian 3pm he @alex review auth-service de PR #412, ranhou deploy dao staging\",\"enabled_languages\":[\"chinese\",\"english\"],\"primary_language\":\"chinese\"}"
      }
    ]
  }'

Evaluation Benchmarks (v2.6)

1. Six-Suite Head-to-Head Benchmark: Offline v2.6 (0.8B / 4B / 9B) vs. Cloud DeepSeek V4.1 Flash

All offline v2.6 models run with 0 system-prompt tokens (system_prompt = "", compact JSON input, temperature = 0), compared head-to-head against UnimeType's production cloud baseline (deepseek-v4.1-flash paired with the full ~2,800-token v30 production system prompt and boundary guards). Zero sentence or OOD probe overlap (0.00%) exists between training data and any of the 6 evaluation suites (1,975 held-out prompts total).

Model / Tier System Prompt Overhead 708 Shared (v4-Aligned) Core-5 (773 Cases) 12-Language / 13-Mode (1,573 Cases) MST-Bench-520 (Exact / Tolerant) Dogfood-30 Real Pain Points (Exact / Tolerant) Zero-Overlap OOD-Unseen-20 (Exact / Tolerant / Probe Repair)
DeepSeek V4.1 Flash (Cloud Baseline) ~2,800 tok (v30) 90.82% (643/708) 90.30% (698/773) 93.20% (1466/1573) 73.46% / 74.81% 53.3% / 76.7% (23/30) 45% / 75% / 90% (18/20)
Transliteration-2.0-0.8B (v2.6) 0 tok (short JSON) 72.32% (512/708) 71.15% (550/773) 69.99% (1101/1573) 41.15% / 41.73% 36.7% / 36.7% (11/30) 25% / 25% / 45% (9/20)
Transliteration-2.0-4B (v2.6) 0 tok (short JSON) 89.12% (631/708) 87.45% (676/773) 88.11% (1386/1573) 63.27% / 63.85% 50.0% / 56.7% (17/30) 35% / 35% / 75% (15/20)
Transliteration-2.0-9B (v2.6) 0 tok (short JSON) 92.09% (+1.27 pp vs cloud) 90.94% (+0.64 pp vs cloud) 91.54% (1440/1573) 65.58% / 67.31% 73.3% / 76.7% (= cloud) 55% / 60% / 90% (18/20, = cloud)

Boundary Safety: Across all 520 noisy mixed-script inputs in MST-Bench-520, all three v2.6 offline models (0.8B, 4B, 9B) recorded 0 protected-span corruptions (URL, @handle, #issue, code, file paths, and version tags preserved verbatim) and 100% pass on closed-set reconvert exhaustion (UNIMETYPE_NO_ALTERNATIVE).

2. Per-Language Strict Accuracy Across All 12 Languages / 13 Modes (1,573 Held-Out Cases)

Language / Output Mode Cases DeepSeek V4.1 Flash (Cloud) v2.6 0.8B v2.6 4B v2.6 9B
Chinese Pinyin (chinese) 261 88.1% 75.9% 91.2% 93.5%
Japanese Kanji-Kana (japanese:natural) 139 95.7% 60.4% 85.6% 87.0%
Japanese Kana-Only (japanese:kana) 100 90.0% 66.0% 75.0% 86.0%
Hindi Hinglish (hindi) 135 91.1% 80.7% 94.8% 99.3%
Arabic Arabizi (arabic) 138 88.4% 67.4% 84.1% 85.5%
Russian Translit (russian) 100 98.0% 52.0% 88.0% 91.0%
Greek Greeklish (greek) 100 85.0% 49.0% 77.0% 85.0%
Vietnamese Telex / ASCII (vietnamese) 100 97.0% 43.0% 84.0% 88.0%
Spanish ASCII (spanish) 100 96.0% 71.0% 85.0% 93.0%
French ASCII (french) 100 95.0% 77.0% 92.0% 87.0%
Portuguese ASCII (portuguese) 100 99.0% 88.0% 97.0% 99.0%
German ASCII / Umlaut (german) 100 99.0% 88.0% 96.0% 100.0%
Italian ASCII (italian) 100 99.0% 83.0% 91.0% 94.0%

Version History & Reproducible Revisions

This repository tracks the latest 2.x release on main while preserving immutable Git tags for every milestone:

  • v2.6 (default / main): Initial public release of the 9B flagship offline tier (dataset_v5.1), supporting 12 languages / 13 output modes with 92.09% accuracy on the 708-case v4-aligned suite and 90.94% on Core-5 (773 cases).
    huggingface-cli download UnimeType/Transliteration-2.0-9B-GGUF --revision v2.6
    
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