Wall Street picked sides.

Wall Street picked sides. Anthropic launched a $1.5 billion enterprise joint venture on May 4 with Blackstone, Hellman & Friedman and Goldman Sachs as founding partners, with each anchor committing $300 million and Apollo, General Atlantic, GIC, Leonard Green and Sequoia joining as additional investors. Within minutes, OpenAI announced “The Development Company,” a rival vehicle raising $4 billion at a $10 billion valuation from 19 investors including TPG, Brookfield, Advent and Bain Capital. Both ventures lean on a forward-deployed engineering model—technical teams embedded inside client organizations to build customized AI workloads—and arrive less than six weeks after OpenAI raised $122 billion in primary funding at an $852 billion valuation. The labs aren’t selling tokens to enterprises anymore; they’re forming permanent capital alliances to deploy them.

The application layer is being underwritten on the same terms. Sierra closed a $950 million Series E on May 4 at a $15.8 billion post-money valuation, led by Alphabet’s GV and Tiger Global with Benchmark, Sequoia and Greenoaks alongside—a 58% step-up from its $10 billion mark in September 2025. Annualized recurring revenue hit $150 million, up from $100M in late November, against a customer base that now includes nearly half the Fortune 50 across mortgage refinancing, insurance claims and returns processing. Co-founders Bret Taylor (OpenAI Group PBC board chair) and Clay Bavor recently shipped Ghostwriter, an agent-as-a-service tool for spinning up specialized agents from natural-language prompts. The same week the labs locked in JV pipes with Wall Street, the canonical agent-economy company priced like a sovereign-fund bet at 105× ARR.

The chip layer is the public-market mirror, and it’s pricing more carefully. Cerebras filed an updated IPO prospectus on May 4 targeting a $3.5 billion raise at a $26.6 billion valuation, offering 28 million shares at $115–$125 with an underwriter option for 4.2 million more, set to list on Nasdaq under ticker CBRS. Most recent quarterly revenue ran up roughly 76% year-on-year to $510 million with $87.9 million in net income, anchored by a 750-megawatt OpenAI inference contract through 2028 worth more than $20 billion over the term. Three days earlier the same filing pointed to a $4 billion raise at a $40 billion valuation; the trim cites market conditions and customer-concentration risk around that single OpenAI deal, with Morgan Stanley, Citigroup, Barclays and UBS as lead bookrunners. Capital + applications + chips all repriced inside 24 hours—and the public bid came in roughly a third below the private one.