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Replit Agent 4 Launches With Infinite Canvas and Parallel Agents — $400M Series D at $9B Valuation, 3x Jump From $3B in Six Months
Replit shipped Agent 4 on March 11 alongside a $400M Series D at a $9B valuation — tripling from $3B in just six months. The headline feature is an infinite design canvas that generates UI variants for users to tweak visually and apply directly to production code, plus parallel agents that handle auth, database, backend, and frontend simultaneously. CEO Amjad Masad is now a billionaire ($2B net worth per Forbes), and the company is targeting $1B ARR by year-end. This is the product Paul Graham said 'generalizes vibe coding beyond what people think of as coding.'
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