AI voice start-up ElevenLabs doubles valuation to $22bn
Existing investors and employees at speech-generation software company sell $300mn worth of stock

TL;DR
- Existing investors sold stock in the company.
- Employees also sold stock in the company.
- The total value of stock sold was $300 million.
- The company specializes in speech-generation software.
- The company's valuation has reportedly doubled.