OpenAI WebRTC Audio Session, now with document context

The meaningful addition here is not the voice model upgrade itself but the document context layer: grounding a live audio session in uploaded files means the model can answer questions about specific content mid-conversation, which is a different interaction pattern than either chatbots or dictation tools. That stateful grounding is what makes this worth examining as a workflow primitive rather than a demo novelty.

This is largely disconnected from recent activity in our archive, as we have no prior coverage to anchor it to. It belongs to a broader thread of developers operationalizing OpenAI's realtime APIs faster than enterprise tooling catches up. Willison's work is worth tracking specifically because he publishes working code with honest friction notes, making his demos a more reliable signal of actual API maturity than vendor announcements. The GPT-Realtime-2 model at the center of this update carries GPT-5-class reasoning claims, and independent developer implementations like this one are among the earliest stress tests of whether that claim holds in practice.

Watch whether other developers building on GPT-Realtime-2 report consistent reasoning quality on document-grounded queries over the next four to six weeks. If the capability degrades noticeably with longer or more complex documents, the GPT-5-class framing will need revisiting.