OpenAI GPT-Realtime-2: Complete Voice API Developer Guide (2026)
May 10 · 9 min read · On May 8, 2026, OpenAI shipped three new voice models into its API — and the most significant of them changes what voice agents can actually do. GPT-Realtime-2 is the first voice model in the Realtime API family to carry GPT-5-class reasoning. That c...
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