OpenAI Launches ‘Playful, Warm’ GPT-5.1 Model Amid Renewed Battle With the NYT

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OpenAI released GPT-5.1 today, the first update for the GPT-5 model since its August debut.

It aims to be a more conversational version of GPT-5, and “warmer by default,” OpenAI says. “Based on early testing, it often surprises people with its playfulness while remaining clear and useful.”

Here, the company is referring to GPT-5.1 Instant, which it says is the “most-used model.” The other variant,…