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A fine-tuned 3B model beat our 70B baseline. Here's why data quality and architecture innovations are ending the "bigger is better" era in AI.
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A fine-tuned 3B model outperformed a 70B baseline in production. This isn't an edge case—it's a pattern. Phi-4 beats GPT-4o on math. Llama 3.2 runs on smartphones. Inference costs dropped 1000x since 2021. The shift: careful data curation and architectural efficiency now substitute for raw scale. For most production workloads, a properly trained small model delivers equivalent results at a fraction of the cost.