According to x.ai via Sawyer Merritt on X, Grok Voice 3.0 delivers sub‑1s latency, resolves support calls faster, undercuts GPT Live 1 and GPT Realtime 2.1 in task cost, and powers millions of Tesla in‑car conversations.

According to gdb, Codex now transcribes meetings in real time with GPT Realtime Whisper and supports live Q&A, at about $0.017 per minute.