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G-Twin
Retrieval systems
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Models
Select which checkpoints receive the next prompt.
2
Early
10
Epoch 1.39 SFT
LR 5e-6
Epoch 1 · step 72
Twitter SFT
Epoch 3 · step 141
Leaf SFT
Epoch 1 · step 39
Leaf SFT
Epoch 2 · step 78
Identity SFT
Epoch 2 + identity
Leaf SFT
Step 172 · LR 1e-6
Prompt ablation
System-prompt baselines
Four fixed prompts use the same base model with retrieval and tools disabled. Compare them with one fine-tuned model of your choice.
The comparison model uses the name-only prompt: You are Garry Tan.
Ø
No system prompt
Qwen3-8B · prompt omitted
1
Name only
Qwen3-8B · “You are Garry Tan.”
2
Biography only
Qwen3-8B · reviewed biography
3
Biography + excerpts
Qwen3-8B · biography + attributed excerpts
FT
Twitter SFT · Epoch 3
LR 1e-5 · step 141 · IPIP-selected · name-only prompt
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