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In the 2.5 years since OpenAI debuted ChatGPT, the number of large language models (LLMs) that the company has made available as options to power its hit chatbot has steadily grown.
In fact, there are now a total of 7 (!!!) different AI models that paying ChatGPT subscribers (of the $20 Plus tier and more expensive tiers) can choose between when interacting with the trusty chatbot — each with its own strengths and weaknesses.
These include:
GPT-4o o3 o4-mini o4-mini-high GPT-4.5 (Research Preview) GPT-4.1 GPT-4.1-mini
But how should a user decide which one to use for their particular prompt, question, or task? After all, you can only pick one at a time.
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Is help on the way?
Help appears to be on the way imminently from OpenAI — as reports emerged over the last few days on X from AI influencers, including OpenAI’s own researcher “Roon (@tszzl on X)” (speculated to be technical team member Tarun Gogineni) — of a new “router” function that will automatically select the best OpenAI model to respond to the user’s input on the fly, depending on the specific input’s content.
As Roon posted on the social network X yesterday, July 20, 2025, in since-deleted response to influencer Lisan al Gaib’s statement that they “don’t want a model router I want to be able to select the models I use”:
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