Justin Uberti

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@juberti

Head of Realtime AI @OpenAI. Created WebRTC. Past: Distinguished Engineer @google, AIM. Amateur mathematician/musician.

Seattle, WA juberti.com Joined February 2007

133 Following 18K Followers 5.7K Posts

Latest posts 5

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Justin Uberti @juberti 5d

Just promoted our new GPT-Live outbound telephony API to GA, allowing developers to make phone calls from their Live voice agent, via any SIP trunk provider (e.g, Telnyx or Twilio). Calls can use HD Voice and can send and receive keypad events (DTMF).
developers.openai.com/api/docs/guide…

Justin Uberti @juberti 3d

Just finished Outer Wilds. Quite an interesting game, with a soundtrack I’ll probably never forget.

Justin Uberti @juberti 3d

nice one

Chess Master Verified account @xxChessMaster 4d

Why is this not a checkmate?🤔😱

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Justin Uberti @juberti 3d

Dots calling was kinda slow, but we fixed it. It's pretty fast now, thanks to WARP and Instant Connect and some heroic refactors, and we think you'll enjoy it a lot more.

samir Verified account @_samirism 5d

we know people love calling their dots - connection times are now much faster.

also by popular demand - you can now hang up hands-free. just say “goodbye” to your dot and it’ll end the call.
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Justin Uberti @juberti 4d

Will be talking about the architecture for GPT-Live next week at VapiCon 2026!

Vapi @Vapi_AI Oct 28

On Day 1 of VapiCon, @juberti’s gives a talk on speech-to-speech models, “Skipping Turns: A More Responsive Architecture for Voice Agents.”

Justin, Head of Realtime AI at @OpenAI is a hands-on engineer and vision-based leader of large (150+) engineering teams. He is also an occasional mathematician, physicist, and musician.

Join Justin and other AI leaders in San Francisco this November.

📍 Fort Mason, San Francisco
📅 November 11–12, 2026

Explore the agenda and get your ticket: vapi.ai/vapicon-2026

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