OpenAI brings voice conversations to existing Codex threads
On September 5, OpenAI announced voice conversations for Codex, its coding agent, available in existing threads and projects. Developers can now speak directly with the agent that wrote a PR or a piece of code, discuss implementation details, debate architecture tradeoffs, and align on product decisions, then let the agent continue working autonomously. Several users relayed the announcement the same day; brandongalang, citing reachvb, confirmed voice mode works in any Codex thread, including older sessions.
Confirmed
- Voice can be invoked directly in existing Codex threads, talking to the same agent that wrote the code
- The official use case: switch to voice when back-and-forth is needed, then let the agent resume execution after the discussion
- reachvb found that voice mode applies to any Codex thread, including pre-existing sessions, relayed by brandongalang
Why it matters
- Previously voice was tied to new sessions, and being unable to resume old threads was a pain point brandongalang had long struggled with; easier session resumption is a meaningful daily-workflow improvement
- Voice complements autonomous agent execution for multi-turn discussions like architecture debates, further lowering the switching cost of human-agent collaboration
2026-09-05 ~ 2026-09-05 · 5 related posts
Primary sources
- Codex adds voice to existing threads: talk through PRs with the agent that wrote them — TheMoonMidas · 2026-09-05
- [source] Codex voice mode now works on any thread, including existing sessions — brandon_galang · 2026-09-05
3 near-duplicate retellings: blakesamic · athyuttamre · athyuttamre