Shisa.AI builds Japanese‑optimized language models and provides enterprise‑grade APIs for translation, speech‑to‑text, text‑to‑speech, and large language model inference. Their platform delivers production‑quality multilingual support (Japanese, Chinese, English) that can be integrated directly into products, and they also maintain an open‑weight Japanese LLM ecosystem for developers to fine‑tune and extend. This combination lets businesses add reliable, native‑level language capabilities without building models from scratch.
Funding
Funding not disclosed
Founders
Product
Problem
Japanese enterprises often need high‑quality translation, speech‑to‑text, and text‑to‑speech services that understand local linguistic nuances, but existing global APIs are optimized for English and lack cultural accuracy, leading to poor user experiences and costly custom development.
Solution
Shisa AI offers a suite of production‑grade APIs—translation, ASR, TTS, and large language models—specifically optimized for Japanese, Chinese, and English. The Shisa Platform provides developers with ready‑to‑integrate endpoints that deliver context‑aware translations, native‑quality speech synthesis, and high‑precision speech recognition, all trained on curated bilingual datasets. An OpenAI‑compatible LLM API (Shisa V2.1 and V2 405B) delivers bilingual performance comparable to leading models while preserving Japanese linguistic fidelity. Custom context prompting and optional fine‑tuning allow enterprises to tailor the models to industry terminology and brand voice. The ecosystem also includes an open‑source Shisa LLM community, encouraging collaborative improvement of Japanese language models.
Target Audience
Primary customers are Japanese enterprises and developers building multilingual products—such as customer‑support platforms, e‑learning services, media workflows, and voice assistants—that require reliable Japanese language AI capabilities.
Features
- Translation API with contextual understanding, cultural localization, and industry‑specific terminology support, processing text in real time
- High‑accuracy ASR API for Japanese and English, handling accents, dialects, and noisy environments with both streaming and batch modes
- Natural‑sounding TTS API offering multiple voice options, emotion control, and native Japanese pronunciation
- Bilingual LLM API (Shisa V2.1, V2 405B) compatible with OpenAI standards, providing chat, content generation, and reasoning capabilities optimized for Japanese
- Custom context prompting and optional fine‑tuning for domain‑specific adaptation
- Scalable cloud infrastructure with per‑usage pricing and volume discounts
- Open‑source model repository and benchmark suite (JP‑TL‑Bench) to foster community contributions and transparent performance evaluation