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Tools2026-06-13 · source-backed
Willison updated his open WebRTC audio playground so you can paste a document before a session and discuss it live over voice. It runs on OpenAI's GPT-Realtime-2, the company's first realtime voice model with GPT-5-class reasoning (128K context, parallel tool calls, interruption handling). The takeaway: realtime voice plus grounding context is now a few lines of browser config. The bar to ship a voice agent that reasons over your own material just dropped to almost nothing.
Each link below shares sources, entities, or timing with this story.
OpenAI uses WebRTC / Shared entities / Same source domain / What happened next
Linked by a graph relationship (OpenAI uses WebRTC); both cover GPT, OpenAI, Simon Willison, Willison; reported by the same outlet (simonwillison.net).
OpenAI uses WebRTC / Shared entities / Same source domain / Shared topic / Earlier coverage
Linked by a graph relationship (OpenAI uses WebRTC); both cover GPT, OpenAI, Willison; reported by the same outlet (simonwillison.net).
OpenAI uses WebRTC / Shared entities / Same source domain / Shared topic / What happened next
Linked by a graph relationship (OpenAI uses WebRTC); both cover GPT, OpenAI, Simon Willison; reported by the same outlet (simonwillison.net).
Linked by a graph relationship (OpenAI uses WebRTC); both cover GPT, OpenAI, Willison; reported by the same outlet (simonwillison.net).
OpenAI uses WebRTC / Shared entities / Same source domain / What happened next / Tension
Linked by a graph relationship (OpenAI uses WebRTC); both cover OpenAI, Simon Willison, Willison; reported by the same outlet (simonwillison.net).
Linked by a graph relationship (OpenAI uses WebRTC); both cover GPT, OpenAI, Simon Willison; reported by the same outlet (simonwillison.net).
OpenAI uses WebRTC / Shared entities / Same source domain / Earlier coverage / Tension
Linked by a graph relationship (OpenAI uses WebRTC); both cover GPT, OpenAI, Simon Willison; reported by the same outlet (simonwillison.net).
OpenAI uses Vercel / Shared entities / Same source domain / Shared topic / What happened next / Tension
Linked by a graph relationship (OpenAI uses Vercel); both cover Simon Willison, Willison; reported by the same outlet (simonwillison.net).