The Real Difference Between Fast and Thinking AI

System 1 vs System 2 AI models: what's actually different, and when should you use each one? With the release of Jev, everyone is talking about System 1 and System 2 models. In this video I explain the real difference between one-pass models and thinking (reasoning) models, test Jev against Qwen 3.8 with thinking on and off, and give you a simple rule for choosing between them. Resources: - Jev launch post (TypeSafe): https://typesafe.ai/blog/introducing-system-one-models-and-jev - Thinking, Fast and Slow by Daniel Kahneman - Merrill & Sabharwal (2023), "The Expressive Power of Transformers with Chain of Thought": https://arxiv.org/abs/2310.07923 - Chain test code: github.com/PromtEngineer/system1-vs-system2 - The 60-second version (Short): https://youtube.com/shorts/8daNaFE-qOg #AI #LLM #ReasoningModels My voice to text App: whryte.com Website: https://engineerprompt.ai/ RAG Beyond Basics Course: https://prompt-s-site.thinkific.com/courses/rag Signup for Newsletter, localgpt: https://tally.so/r/3y9bb0 💻 Pre-configured localGPT VM: https://bit.ly/localGPT (use Code: PromptEngineering for 50% off). Signup for Newsletter, localgpt: https://tally.so/r/3y9bb0