SYNTH represents a significant shift in AI training by utilizing a fully generalist synthetic dataset focused on reasoning and skill assimilation rather than traditional large web archives. Developed by Frontier AI labs, SYNTH is built on a foundation of 50,000 vital Wikipedia articles expanded into diverse problem-solving paths, aiming to enhance data efficiency and reasoning capabilities. This synthetic data enables smaller models like Baguettotron and Monad to achieve state-of-the-art results on industry benchmarks with significantly fewer resources. SYNTH employs intricate synthetic pipelines that integrate fine-tuned models and random constraints, fostering a more robust model that can handle various tasks from arithmetic to creative writing across multiple languages. This approach not only improves data efficiency but also emphasizes the importance of context preparation in AI deployment, suggesting that engineering data to understand and enrich domain ontology can significantly enhance the performance of generative models.