Developer tools Realtime AI Voice Agents

AssemblyAI

Voice AI infrastructure for developers building products that transcribe, understand, and act on speech.

AssemblyAI is a Voice AI platform/product suite providing developer APIs and deployment options for production speech workflows, including speech-to-text, real-time transcription, voice agent infrastructure, transcript intelligence, guardrails, and LLM access.

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releasePRIMARY2026-06-23

AssemblyAI launches Universal-3.5 Pro Realtime with Context Carryover

AssemblyAI’s Universal-3.5 Pro Realtime now carries forward the agent side of a conversation to improve live transcription. The release also ships multilingual realtime ASR features, and one early deployment said critical-utterance errors fell from 26% to 9%.