NTT tsuzumi vs Rakuten AI 3.0
A side-by-side look at scores, pricing and features — with RECATOOLS' ASEAN-aware verdict for each.
NTT tsuzumi
Japan's sovereign lightweight LLM — enterprise-grade Japanese AI on a...
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Rakuten AI 3.0
Japan's largest homegrown LLM — government-backed, open-weight, built...
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| RECATOOLS Score | 7.2 / 10 | 6.8 / 10 |
| Capability | — | |
| Value for money | — | |
| Ease of use | — | |
| ASEAN readiness | — | |
| API quality | — | |
| Pricing | Enterprise | Open Source |
| Free tier | None — enterprise and government contracts only; no public free tier | Free — Apache 2.0 open-weight model, download and self-host via Hugging Face |
| Paid from | Contact NTT / NTT DATA (negotiated B2B); pay-as-you-go via Azure MaaS (token-based) | No paid tier — open-weight, self-hosted only |
| Has API | ✓ | ✗ |
| Open source | ✗ | ✓ |
| Free to use | ✗ | ✓ |
| Users | Not disclosed | — |
| Founded | 1952 | 1997 |
| Maker | Nippon Telegraph and Telephone Corporation (NTT) | Rakuten Group, Inc. |
| Verdict | NTT tsuzumi 2 is a credible sovereign-AI play, not just a brand exercise. The single-H100 inference claim checks out across multiple independent reports, and being tapped for Japan's Digital Agency "Gennai" trial — rolli... |
What this is for: running a genuinely capable Japanese-English bilingual LLM for writing, coding, and document work, either self-hosted or as the model behind Rakuten's own consumer products. It's Japan's most prominent... |
| Full review → | Full review → |
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Comparisons cover up to 4 tools. Scores are RECATOOLS editorial assessments; verify current pricing on each vendor's site.