---
source_url: "https://callsphere.ai/blog/vw9h-build-voice-agent-soniox-v4-real-time-stt-2026?utm_source=openai"
title: "Build a Voice Agent with Soniox v4 Real-Time STT (60+ Languages, 2026) | CallSphere Blog"
mirrored_at: 2026-08-21T03:02:03.415Z
host: callsphere.ai
cited_in_42a: true
mirror_canonical: "https://index.42a.ai/callsphere.ai/blog/vw9h-build-voice-agent-soniox-v4-real-time-stt-2026__q__utm_source_openai"
---

> **Original source:** https://callsphere.ai/blog/vw9h-build-voice-agent-soniox-v4-real-time-stt-2026?utm_source=openai

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Build a Voice Agent with Soniox v4 Real-Time STT (60+ Languages, 2026) | CallSphere Blog