Shaping model behavior in GPT-5.1— the OpenAI Podcast Ep. 11

ℹ️ EPISODE INFO

Released

December 2, 2025

Duration

28m

Channel

OpenAI

Watch on YouTube

▶ Open ↗

📝 EPISODE DESCRIPTION

What does it mean for an AI model to have "personality"? Researcher Christina Kim and product manager Laurentia Romaniuk talk about how OpenAI set out to build a model that delivers on both IQ and EQ, while giving people more flexibility in how ChatGPT responds. They break down what goes into model behavior and why it's an important, but still imperfect blend of art and science. Chapters

• 00:00:43 — GPT-5.1 goals and the shift to reasoning models
• 00:02:18 — Differences between GPT-5 and GPT-5.1
• 00:04:55 — Unpacking the model switcher
• 00:07:24 — Understanding user feedback
• 00:08:27 — Measuring progress on emotional intelligence
• 00:10:02 — What is model personality?
• 00:14:25 — Model steerability, bias, and uncertainty
• 00:21:59 — Advantages of memory in ChatGPT
• 00:25:27 — Looking ahead and advice for getting the most out of models

🎤 SPEAKERS

• Andrew Mayne

  host

• Laurentia Romaniuk

  guest

• Christina Kim

  guest

🧾 EPISODE SUMMARY

In this episode of OpenAI, featuring Andrew Mayne and Laurentia Romaniuk, Shaping model behavior in GPT-5.1— the OpenAI Podcast Ep. 11 explores GPT-5.1 makes ChatGPT reasoning-first, warmer, and more steerable today OpenAI discusses GPT-5.1’s central shift: all ChatGPT-tier models are now reasoning models that can choose when to “think” more deeply, improving performance broadly (not just on overtly hard problems).

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