# Lineage of `Qwen/Qwen2.5-0.5B-Instruct`

> **Likely a descendant of `Qwen/Qwen2.5-0.5B`** — architecture matches exactly and 2.07% of weights survived unchanged, consistent with post-training (SFT / DPO / continued pretraining) on that base.

## Ranking

| Rank | Candidate | Sparsity | Changed | Verdict |
|---:|---|---:|---:|---|
| 1 | `Qwen/Qwen2.5-0.5B` | 2.07% | 483,814,955 / 494,032,768 (97.93%) | `likely_descendant` |
| 2 | `openai-community/gpt2` | 0.00% | 0 / 0 (100.00%) | `architecture_mismatch` |