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AI Daily Brief — 27 February 2026

The biggest Friday of the AI year so far. OpenAI closes a $110B funding round at a $730B pre-money valuation — the largest private financing ever recorded. Amazon commits $50B in cash ($15B upfront + $35B on conditions) plus 2 GW of AWS Trainium capacity (the largest single cloud AI infrastructure deal ever) and a $100B expansion of the existing $38B AWS partnership. SoftBank commits $30B and NVIDIA commits $30B. Post-money valuation is ~$840B. Hours later, with the 5:01 PM Pentagon deadline lapsed, Donald Trump orders all federal agencies to “immediately cease all use” of Anthropic technology under a six-month phase-out; the DoD designates Anthropic a “supply-chain risk to national security” and the GSA pulls Anthropic from USAi.gov. OpenAI announces a Pentagon partnership the same day, filling the gap.

Top stories

  • OpenAI — $110B raise at $730B pre-money. Largest private financing in history. Amazon $50B (cash $15B + $35B on conditions, plus 2 GW Trainium and $100B AWS expansion), SoftBank $30B, NVIDIA $30B. Post-money ~$840B. via TechCrunch
  • Trump cuts off Anthropic from federal use. Following Anthropic’s refusal at 5:01 PM, Trump directs federal agencies to “immediately cease all use” of Anthropic technology over a six-month phase-out. Hegseth designates Anthropic a “supply-chain risk to national security” — any company doing business with US military must prove no Anthropic exposure. GSA pulls Anthropic from USAi.gov. Anthropic’s ~$200M Pentagon contract goes “in jeopardy.” via CNN
  • OpenAI signs Pentagon partnership. The same day Trump cuts Anthropic off, OpenAI announces a Department of Defense partnership — filling the gap left by the supply-chain-risk designation. via NBC News

By the numbers

  • OpenAI raise: $110B · pre-money $730B · post-money ~$840B · largest private financing ever
  • Amazon commitment: $50B cash · 2 GW AWS Trainium · $100B AWS partnership expansion (on top of existing $38B)
  • SoftBank $30B · NVIDIA $30B
  • Anthropic-DoD: Trump cease-use order · supply-chain risk designation · GSA removes from USAi.gov · ~$200M contract in jeopardy · 6-month phase-out

Compiled by AI Feed’s editor from publicly reported announcements on 27 February 2026.