Article · 2026-07-08 · 6 moments

Introducing GPT‑Live

Introducing GPT‑Live OpenAI finally upgraded the model used by ChatGPT voice mode! I've had preview access for a few weeks in the iPhone app, and the new model is very impressive. It also has the ability to spin off harder tasks to GPT-5.5: For questions that require web search, deeper reasoning, or more complex work, it delegates to our latest frontier model behind the scenes and brings the result back into the conversation when it’s ready. While it works, GPT‑Live can keep talking with you ✦ AI generated

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GUEST OpenAI HOST Simon Willison

Anecdote◆

During the preview period, GPT-Live had a bug where it interrupted the user to laugh at statements that weren't intended as jokes, which felt rude and condescending; after being reported to OpenAI, the behavior became less frequent.

Simon Willison describes an obscure bug where the model would interrupt to laugh inappropriately, which he reported to OpenAI and which was subsequently mitigated.

transcript

Simon Willison: the model was interrupting me to laugh at things I said, which weren't even intended as jokes! It felt rude and condescending - I reported it to OpenAI and as far as I can tell they made some tweaks and it's now less likely to happen.

Mechanism◆

GPT-Live delegates harder tasks—web search, deeper reasoning, or more complex work—to the latest frontier model (GPT-5.5 at launch) running behind the scenes, while continuing to talk with the user to maintain conversational flow.

OpenAI describes how GPT-Live handles hard queries by silently delegating them to GPT-5.5 and folding the result back into the live conversation once ready.

transcript

OpenAI: For questions that require web search, deeper reasoning, or more complex work, it delegates to our latest frontier model behind the scenes and brings the result back into the conversation when it's ready. While it works, GPT‑Live can keep talking with you and maintain the flow of conversation.

Example

Reviewing his transcripts, Simon Willison believes his musing about where owls hide before dusk was the specific line that triggered GPT-Live's inappropriate interrupting laugh.

Simon Willison identifies a transcript excerpt about wondering where owls hide before dusk as the likely trigger for the laughing bug.

transcript

Simon Willison: so where are the owls when they're not, like before dusk? The owls exist, right? Are they hiding in holes? Where are they hiding?

Anecdote

Simon Willison's longest conversation with the new GPT-Live model has lasted a full hour, held while walking his dog and photographing pelicans.

Simon Willison shares that his longest session with GPT-Live was an hour-long conversation during a dog walk spent photographing pelicans, still without catching an owl on camera.

transcript

Simon Willison: My longest conversation with the new model has been a full hour while walking the dog (and taking photos of pelicans). I have not yet managed to take a photo of an owl.

Claim◆

The new GPT-Live model, used in ChatGPT's voice mode, is very impressive after several weeks of preview access on the iPhone app.

Simon Willison reports that after weeks of preview testing, the upgraded voice mode model impressed him significantly.

transcript

Simon Willison: I've had preview access for a few weeks in the iPhone app, and the new model is very impressive.

provides context · 1

Context

The previous ChatGPT voice mode was based on an aging, relatively weak GPT-4o era model with a 2024 knowledge cutoff, which limited its usefulness as a brainstorming partner enough that the author had mostly stopped using it.

Simon Willison explains he'd largely abandoned voice mode because the underlying GPT-4o era model was outdated and weak.

transcript

Simon Willison: The previous voice mode in the ChatGPT app was based on a GPT-4o era model, with a knowledge cut-off some time in 2024. I had mostly stopped using voice mode because the age and relative weakness of the model greatly limited how useful it was as a brainstorming partner.

Highlight slides

GPT-Live Impresses in Voice Mode Preview✦ from: The new GPT-Live model, used in ChatGPT's voice mode, is very impressive after several weeks of preview access on the iPhone app.GPT-Live's Awkward Laughing Bug✦ from: During the preview period, GPT-Live had a bug where it interrupted the user to laugh at statements that weren't intended as jokes, which felt rude and condescending; after being reported to OpenAI, the behavior became less frequent.GPT-Live Delegates Hard Tasks to GPT-5.5✦ from: GPT-Live delegates harder tasks—web search, deeper reasoning, or more complex work—to the latest frontier model (GPT-5.5 at launch) running behind the scenes, while continuing to talk with the user to maintain conversational flow.Source✦ from: The new GPT-Live model, used in ChatGPT's voice mode, is very impressive after several weeks of preview access on the iPhone app.Reported and Mitigated✦ from: During the preview period, GPT-Live had a bug where it interrupted the user to laugh at statements that weren't intended as jokes, which felt rude and condescending; after being reported to OpenAI, the behavior became less frequent.Conversation Flow Never Stops✦ from: GPT-Live delegates harder tasks—web search, deeper reasoning, or more complex work—to the latest frontier model (GPT-5.5 at launch) running behind the scenes, while continuing to talk with the user to maintain conversational flow.

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