"Trace Shape Reveals Model Capability: 3B vs 7B"

<h1> Trace Shape Reveals Model Capability: 3B vs 7B </h1> <p>Last week I traced the same agent running on two different model sizes. Same code, same task, same prompts. The only difference: the model.</p> <ul> <li> <strong>Phone:</strong> Qwen2.5-3B (3 billion parameters, running on a Pixel 8 Pro)</li> <li> <strong>Legion:</strong> Qwen2.5-7B (7 billion parameters, running on an RTX 4060)</li> </u

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