AI Agent2026-05-17
Voice Agent
Also known as: 音声エージェント / Voice AI Agent / 音声AIエージェント
AI agent using speech as its primary interface, combining real-time STT and TTS for phone support automation and voice command workflows.
Overview
Voice Agents are built on platforms such as OpenAI Realtime API, NVIDIA PersonaPlex, and xAI Grok voice API. Full-duplex support reproduces natural conversational pauses and interruptions, enabling deployment in phone support and 24-hour customer service.
2026 Trends
The arrival of GPT-Realtime-2 and OpenAI gpt-realtime-1.5 has popularised reasoning-capable voice agents that handle complex tasks beyond simple Q&A. Dictation-specific tools like Aqua Voice are also gaining traction.
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OpenAI released the gpt-realtime-1.5 audio model on February 26, 2026, and openai/realtime-voice-component on GitHub provides an official React reference for voice UIs. This article summarizes the documented gains (+5% audio reasoning, +10.23% transcription, +7% instruction following), pricing, the component's positioning as a reference implementation, and practical considerations for business adoption.
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NVIDIA PersonaPlex 7B Complete Guide — Real-Time Full-Duplex Voice AI Architecture & Use Cases [2026]
NVIDIA PersonaPlex 7B, released in January 2026, is an open-source voice AI that integrates the traditional ASR→LLM→TTS pipeline into a single end-to-end model, achieving true full-duplex voice interaction. This guide covers architecture, performance benchmarks, setup procedures, and practical use cases.
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