VoiceRun has raised $5.5 million in seed funding to help enterprises deploy voice AI systems that are reliable in production.

The round was led by Flybridge Capital Partners, with participation from RRE Ventures and Link Ventures.

The Cambridge startup has built a developer-first platform that lets engineering teams keep ownership of their code while using shared infrastructure for speech-to-text, large language models, text-to-speech and telephony.

The company says it can cut voice agent build times from months to days, with tools for deployment, testing and performance monitoring built in.