
Gemini 3.1 Flash Live vs GPT Realtime 1.5: Which Voice AI Agent Should You Build With in 2026?
The voice agent landscape changed dramatically in March 2026. Google released Gemini 3.1 Flash Live on March 26, its most capable real-time voice model. OpenAI's GPT Realtime 1.5, the successor to GPT-4o Realtime, brings agentic capabilities and native audio.







