Axion 1.0

Axion 1.0 open agent foundation model released

Axion 1.0 is a 35B fully open agent foundation model trained with only two supervised fine-tuning stages plus reinforcement learning, skipping mid-training, DPO, and OPD. The team released the full recipe including data construction, verification, prompts, and training code, claiming competitiveness with leading commercial models on several agentic benchmarks.