Companies that want to build AI voice into their products are rushing to work with ElevenLabs, the startup that develops synthetic voice technology like voice cloning and dubbing tools. Now ElevenLabs is turning up the volume on its business with a huge series C raise, just a year after a sizable series B. The New York startup has closed a Series C of $250 million at a valuation of between $3 billion and $3.3 billion, multiple sources tell TechCrunch. The round is being led by ICONIQ Growth, sev...