Sierra, co-founded by Bret Taylor, closed a $950M Series E at $15.8B valuation on May 4. The enterprise AI agent company has over 40% of the Fortune 50 as customers and $150M ARR.
Enterprise AI Agents Go Mainstream: Investment and Deployment
From Sierra's $15.8B Series E to Meta Business AI's 10M weekly conversations and IBM's multi-agent enterprise blueprint — tracking the moment enterprise AI agents move from pilot to production.
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On its Q1 2026 earnings call (April 29), Meta disclosed that its business AI tools processed about 10 million conversations per week as of late March, up from 1 million at the start of the year — still free, monetization hinted ahead.
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IBM CEO Arvind Krishna unveiled a comprehensive multi-agent AI operating model at Think 2026, simultaneously launching watsonx Orchestrate (next-gen), IBM Bob, IBM Concert, and IBM Sovereign Core to bridge the AI divide separating investment from ROI.