GPT-OSS vs. Qwen vs. Deepseek: Comparing Open Source LLM Architectures

<p>OpenAI recently released its first open-weights model since GPT-2, entering a field led by DeepSeek and Alibaba&#39;s Qwen.YC&#39;s Ankit Gupta breaks down everything you need to know about these top OSS models, including what sets them apart under the hood. He’ll compare their approaches to mixture-of-experts, long-context training, and post-training techniques that shape reasoning and alignment—and explore how different design choices lead to surprisingly similar performance.</p>