I got fed up of waiting for OpenAI to bring their much improved gpt-realtime-2 voice conversation model to the ChatGPT product, so I upgraded my OpenAI-WebRTC playground tool to use it and to let you paste in a document to have a conversation about, too simonwillison.net/2026/Jun/1…
Simon Willison upgraded his OpenAI-WebRTC playground to use OpenAI's…
Brief
Simon Willison replaced the model behind his OpenAI-WebRTC playground with OpenAI's gpt-realtime-2 to enable improved voice conversations and added a feature to paste a document and converse about its contents. He published details on his site (June 1, 2026) and announced the update on X on June 13, 2026 after waiting for ChatGPT to ship the model.
Why it matters
Simon Willison upgraded his OpenAI-WebRTC playground to use OpenAI's gpt-realtime-2 voice conversation model (announced in a blog post on 2026-06-01).
Key details
- The playground now accepts pasted documents so you can have a voice/text conversation about the document; Willison made the change after waiting for ChatGPT to adopt gpt-realtime-2 (tweeted 2026-06-13).