Wispr raises $280M Series B at $2B valuation, ten months after $25M round

Wispr raised $280 million in Series B funding at a $2 billion valuation on August 17, 2026, with Menlo Ventures leading. The round brings total funding to $361 million — up from a $25 million raise in November 2025. Worth flagging: that escalation implies a dramatic shift in investor conviction around voice-based AI interfaces within a single year.