RakutenAI Models by Rakuten
Last refreshed 2026-05-19. Next refresh: weekly.
Details
About
The RakutenAI family of large language models (LLMs) features advanced models primarily for Japanese language processing, with solid performance in English. The flagship model, RakutenAI-7B, is a 7-billion parameter model developed from the open-source Mistral-7B-v0.1, enhanced by training on a diverse dataset of Japanese and English texts. This training, executed on Rakuten's powerful GPU infrastructure, enables the model to excel in Japanese language tasks. The model's tokenizer is specifically optimized for Japanese characters, ensuring efficient processing. Alongside the foundation model, Rakuten offers instruction-tuned and chat-tuned versions, dubbed RakutenAI-7B-instruct and RakutenAI-7B-chat, for more task-specific applications. All models are open-source under the Apache 2.0 license and available on Hugging Face. However, users should be aware of potential biases and inaccuracies 11 10 12.
Decision facts
- Best fit
- multilingual
- Capability starting point
- RakutenAI 7B with 4k context
- Lowest tracked input
- Not tracked
- Closest related family
- Claude 3
Current Variants
Use-when guidance is based on each model's tracked capabilities, context window, release date, and replacement status.
Use when the workload needs 4k context and 7B parameters.
Use when the workload needs 4k context and 7B parameters.
Use when the workload needs 4k context and 7B parameters.
| Model | Use when | Released | Signals | Status |
|---|---|---|---|---|
| Rakuten AI 3.0 | Use when the workload needs multilingual. | 2026-03 | multilingual | Current |
| RakutenAI 7B | Use when the workload needs 4k context and 7B parameters. | 2023-12 | 4k context7B parameters | Current |
| RakutenAI 7B Instruct | Use when the workload needs 4k context and 7B parameters. | 2023-12 | 4k context7B parameters | Current |
| RakutenAI 7B Chat | Use when the workload needs 4k context and 7B parameters. | 2023-12 | 4k context7B parameters | Current |
Release Timeline
2 release groupsSpecifications(4 models)
| Model | Released | Context | Parameters |
|---|---|---|---|
| Rakuten AI 3.0 | 2026-03 | — | — |
| RakutenAI 7B | 2023-12 | 4k | 7B |
| RakutenAI 7B Instruct | 2023-12 | 4k | 7B |
| RakutenAI 7B Chat | 2023-12 | 4k | 7B |
