Latent Space AI New Updates to GPT-5: Understanding New Model Dynamics
Aug 21, 2025
Discover the fascinating updates in GPT-5, focusing on its enhanced efficiency and reasoning capabilities. The introduction of a model picker allows for personalized user experience and streamlined response methods. Dive into the improvements that not only modernize the model's architecture but also bring back legacy features, ensuring adaptability for various user needs. Key trade-offs and customization options are discussed, shedding light on how these advancements reshape the AI landscape.
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Model Picker Returns With Mode Controls
- OpenAI restored a model picker with Auto, Fast, Thinking and Pro to give users control over GPT-5 behavior.
- The router (Auto) previously misrouted queries causing worse outputs, so manual modes help performance-sensitive tasks.
Pick Mode Based On Your Task
- Use Auto for most queries since the router is intended to pick the best model automatically for typical users.
- Choose Fast for quick answers and Thinking for deep, complex reasoning when you need better responses.
Thinking Mode Has Large Context But Limits
- GPT-5 Thinking has a 196,000 token context window and a 3,000 messages/week rate limit for most users.
- Extra capacity shifts users to a Thinking mini after the limit, balancing cost and availability.