Universal Latent Space Alignment Across LLM Families via Linear Projection

We empirically confirm the Platonic Representation Hypothesis by demonstrating that hidden state representations from LLMs of entirely different families (Mistral-7B, Falcon-7B, Gemma-2-9B) align to Qwen2.5-7B's latent space with cosine similarity exceeding 0.99 using a single linear projection of approximately 4MB.