Intuitive AI for Japan

Build with AI tuned for Japanese

Production APIs for language, speech, and translation — tuned for Japanese, fluent in English and Chinese. OpenAI-compatible where it counts, so you can ship in minutes.

Get started Explore the API

Shisa LLM

OpenAI-compatible chat completions, purpose-tuned for Japanese and bilingual JA/EN tasks. Drop-in with the OpenAI SDKs.

LLM docs

Speech Recognition

Accurate Japanese speech-to-text with automatic language detection across 97 languages, hotword boosting, and speaker handling.

ASR docs

Text-to-Speech

Natural-sounding Japanese voices with streaming, multiple audio formats, and a catalogue of ready-to-use voice presets.

TTS docs

Translation

Best-in-class Japanese ↔ English translation with context awareness, streaming output, and an OpenAI-style response shape.

Translation docs

Get an API key

Every Shisa API uses the same key. Create one in the Shisa platform, then pass it as a bearer token — see Authentication for the per-service header conventions. New accounts receive $10 in free API credits to spend across any service.

Base URL

All services share a single host:

https://api.shisa.ai

Service	Method	Path
LLM (chat completions)	`POST`	`/openai/v1/chat/completions`
Speech Recognition	`POST`	`/asr/srt/audio_llm`
Text-to-Speech	`POST`	`/tts`
Translation	`POST`	`/translate/`

Ready to build? Start with the LLM quickstart.