General Catalyst leads $1.1B round into 2-month-old River AI

Published on August 11, 2026
River AI, a startup founded by xAI co-founder Igor Babuschkin, has a fascinating vision for personal agents and secured $1.1 billion out of the gate.
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An unreleased Anthropic model made progress on one of math's biggest unsolved problems

August 11, 2026
For more than 150 years, the Riemann hypothesis has stood as one of the major unsolved problems in mathematics. Anthropic hasn't solved it — but the company's models made more progress than you might expect.

Brad Lightcap, OpenAI's longtime COO, is leaving to 'start something new'

August 11, 2026
One of OpenAI's longest serving executives is headed out the door, although the longtime COO told staff that he was "excited to help you all advance the mission from a different vantage point."