Wispr has raised a $280 million Series B led by Menlo Ventures at a $2 billion valuation, bringing total funding to $361 million as the voice AI startup expands beyond dictation into meeting note-taking and new human-computer interaction products. Existing investors including Notable Capital, NEA, Neo Ventures, 8VC and MVP Ventures joined the round, alongside Acrew, Forerunner, Goodwater, Peak XV, Together Fund and PLUS Capital. The company also previewed a proprietary speech model called Canto, which CEO Tanay Kothari said was built for real-world use and can cut dictation error rates from more than 30% of words to between 5% and 10% in difficult conditions such as background noise, wind, heavy accents and music. Wispr Flow says its software has generated more than 60 billion words, is used across nearly all Fortune 500 companies and more than 10,000 enterprises, and has recently expanded with an Android app, hardware partnerships, a meeting note-taker and Wispr Interface Labs under Ariya Rastrow as competition intensifies across dictation and workplace AI.