LLM-jp-3.1 8×13B Instruct4

LLM-jp-3.1 8×13B Instruct4 starts from the corresponding LLM-jp-3 checkpoint. The family adds 400 billion mid-training tokens, with instruction-response data mixed into the pretraining corpus.

Research release

Instruct4 adds two stages of DPO

After supervised fine-tuning, the project generated multiple answers and scored them with Qwen2.5-32B-Instruct. It used those preferences for DPO in two stages. The second stage also adds the Japanese safety preference dataset ac-self-inst.LLM-jp-3.1 8×13B Instruct4 official model card

Compare alignment at the same size

Practical guidance. Keep the expert routing and serving configuration fixed when comparing Instruct3 and Instruct4. Their response differences cannot be attributed to parameter count alone.

Specifications & access

LLM-jp-3.1 8×13B Instruct4 specifications
DetailValue and conditions
StatusResearch release
AccessDownloadable
Model identifiersllm-jp-3.1-8x13b-instruct4
Context window4,096 tokens

Maximum sequence length stated in the model card.

LLM-jp-3.1 8×13B Instruct4 official model card
Architecture40 layers; eight experts with two selected per token.LLM-jp-3.1 8×13B Instruct4 official model card
Size73,162,828,800 total; 22,200,806,400 active parameters.LLM-jp-3.1 8×13B Instruct4 official model card
LicenseApache 2.0.LLM-jp-3.1 8×13B Instruct4 official model card
Pretraining total2.5 trillion tokens, including the 400-billion-token mid-training stage.LLM-jp-3.1 8×13B Instruct4 official model card

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