Yi-1.5 34BvsGPT-o1

Yi-1.5 34B is 01.AI's open-source model that delivers impressive performance for its size, particularly on bilingual Chinese-English tasks. At 34 billion parameters, it offers a strong foundation for fine-tuning and custom deployments. The Yi series has been influential in demonstrating that high-quality training data and methods can produce competitive models without requiring the largest compute budgets.

GPT-o1 is OpenAI's first dedicated reasoning model, introducing the concept of 'thinking tokens' where the model reasons through problems step-by-step before generating a response. This approach significantly improves performance on complex mathematics, coding challenges, and scientific reasoning compared to standard language models. With a 200K token context window, o1 can process lengthy technical documents while applying deep reasoning. It excels on competition-level math problems, PhD-level science questions, and complex coding tasks that require careful logical thinking. While slower and more expensive than GPT-4o due to the reasoning overhead, o1 delivers substantially better results on tasks that benefit from deliberate, structured problem-solving rather than quick pattern matching.