gpt-5

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GPT-5 Router Explained: Selecting Thinking vs. Fast Models

GPT-5 Router Explained: Selecting Thinking vs. Fast Models

Learn how OpenAI's GPT-5 router works. This article explains its unified architecture and the criteria it uses to route queries to fast or thinking sub-models.

10/13/2025• 32 min read
gpt-5 routeropenailarge language models
gpt-5 | RankStudio