AI chip startup Etched closed a $300 million Series C at a $10.3 billion valuation led by Sequoia, with a16z, SK Hynix and others participating. The company says client systems are in testing with roughly $1 billion in booked orders. Valuation roughly doubled since December’s round. It matters because the story is moving the wider AI conversation this week across desks. The piece has also been circulating in social discussion among people who watch this beat. Caveat: early reporting can move faster than complete confirmation, so follow the primary source for updates.