ELYZA
4.3
ELYZA is a Japanese LLM developer spun out of the University of Tokyo's Matsuo Lab and now working with KDDI, selling Japanese-language models to enterprises. The reason to consider it is not benchmark position but sovereignty: a domestic vendor, a domestic contract and models trained for Japanese.
- Japanese UI
- Enterprise contract
- Pricing
- Contact sales
- Free tier
- No
- Commercial use
- Check the vendor terms
- Japanese UI
- Yes
- Enterprise contract
- Available
What it is good for
- Japanese enterprises with data-sovereignty requirements
- Public-sector and regulated procurement that favours domestic vendors
- Japanese-language tasks where a general model underperforms
- Organisations needing a Japanese-law contract and local support
Strengths and trade-offs
Strengths
- Domestic vendor with Japanese-language contracting and support
- Models trained with Japanese as the primary language
- Deployment options that keep data inside Japan
- Backing from KDDI for enterprise delivery
Trade-offs
- General capability trails the frontier labs
- Enterprise sales only; pricing on request
- Smaller ecosystem of tools and integrations
Editors' review
A domestic Japanese LLM, chosen for sovereignty rather than for benchmarks
On raw capability, ELYZA does not compete with the frontier labs, and presenting it that way misses the point. It is selected when the requirement is that the vendor, the contract and the data stay in Japan — a constraint that rules out the alternatives before capability is discussed.
Japanese-first training does show on Japanese tasks, particularly where the output has to read as native business writing rather than as a good translation.
Everything else is the usual enterprise trade: pricing on request, a sales cycle, and a smaller ecosystem of tooling around the model. Budget for integration work that would be off-the-shelf with OpenAI or Anthropic.
Verdict
The right answer when sovereignty is a requirement. The wrong one when raw capability is.
Compiled from official documentation and public sources, with our own editorial judgement. We do not publish figures we cannot source.