slices:
- sources:
  - layer_range: [0, 40]
    model: Qwen/Qwen2.5-72B-Instruct
- sources:
  - layer_range: [30, 40]
    model: Nexusflow/Athene-V2-Chat
- sources:
  - layer_range: [40, 80]
    model: Qwen/Qwen2.5-72B-Instruct
merge_method: passthrough
dtype: bfloat16
tokenizer_source: "Qwen/Qwen2.5-72B-Instruct"