The capex bill comes in — and the market starts marking AI to market

Send us Fan MailThree of the largest AI spenders in the world reported within hours of each other. Alphabet posted $109.9bn revenue (+22%), Cloud at $20bn (+63%), and raised 2026 capex guidance to $180–190bn. Microsoft posted $82.9bn (+18%), Azure +40%, an AI annualised revenue run-rate of $37bn (+123%), and 20 million paid Microsoft 365 Copilot seats. Meta posted $56.31bn (+33%) and lifted 2026 capex to $125–145bn.The market response was the story. Alphabet and Microsoft were rewarded for showing AI revenue catching up to AI capex. Meta fell more than 6% after-hours because its capex line moved faster than its monetisation story. This is the first quarter where investors clearly priced AI ROI per company rather than as a sector.Snap launched AI Sponsored Snaps, a conversational ad format that places brand-built AI agents inside the Chat tab, marked with a small "Ad" notation. An alpha is running with Experian as the data partner. Snap quotes existing Sponsored Snaps at 22% higher conversions and roughly 20% lower cost per action — those are Snap's own numbers, but the format itself is a new addressable surface for performance marketers.Mistral pushed Workflows into public preview inside Mistral Studio — a Temporal-powered orchestration engine for long-running, fault-tolerant agent processes, with the data plane held in the customer's environment. ASML, La Banque Postale, CMA-CGM and France Travail are listed as early users. This is the European-led answer to Bedrock Managed Agents and Vertex Agent Builder.Watchlist: YouTube ad revenue came in at $9.88bn — softer than Wall Street expected, with subscriptions now growing faster than ads inside YouTube. And Microsoft 365 Copilot crossed 20 million paid seats, up from the 15 million figure shared in January.The day's pattern is accountability. AI revenue has become quarterly evidence rather than narrative. Cloud growth, Copilot seat counts, Lattice ranking gains and Search query volumes are now lines an investor and a client can both read on the same page.If yesterday's stories were about where AI runs, today's are about whether AI pays. The shift from "we are investing" to "we are earning" has commercial implications inside every paid-media review and every renewal conversation this quarter.