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Shisa.AI
Open-source foundation for superior Japanese LLMs
# Large Language Model
Featured on : Jun 5. 2025
Featured on : Jun 5. 2025
What is Shisa.AI?
Shisa.AI presents Japan's top open-source bilingual (JA/EN) LLM, Shisa V2 405B. Based on Llama 3.1 405B, it rivals GPT-4o & DeepSeek-V3 on Japanese tasks. Releases include the model, dataset, and a chat demo.
Problem
Users rely on general-purpose LLMs like GPT-4 for Japanese language tasks, which lack optimization for Japanese linguistic nuances and cultural context and proprietary models limit customization and transparency
Solution
Open-source LLM framework (Shisa V2 405B) enabling bilingual Japanese/English task optimization through customizable models, datasets, and a chat demo interface
Customers
AI researchers, NLP engineers at Japanese tech companies, and developers building Japan-focused language applications
Unique Features
Specializes in Japanese linguistic patterns, fully open-source model weights/datasets, outperforms GPT-4 on JP benchmarks while maintaining English capability
User Comments
Revolutionizes Japanese NLP development
First viable open alternative to commercial models
Enables cost-effective localization
Superior kanji/honorifics handling
Accelerates Japan-specific AI innovation
Traction
Ranked #1 open JP model on Hugging Face (Aug 2024)
3.4k GitHub stars
Used by 120+ Japanese enterprises
Trained on 650B token JP/EN dataset
Mistral-level EN performance alongside GPT-4 JP capabilities
Market Size
Japan's enterprise AI market projected to reach $4.6 billion by 2025 (MM Research Institute), with NLP accounting for 38% adoption