Arfur Rock on Marketing

OpenEvidence raising $250M at $12B. $150M RR on just ads, +3x from August. On <1M users. Resulting in 90% GM, inclusive of all compute. 2026 will be the year AI ads cross the rubicon. If you're building an AI app figure out your ad strategy ASAP. You'll be behind without.

633 likes37 repliesPosted Dec 12, 2025

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Viral score

Based on absolute engagement — the platform doesn’t expose follower counts here, so large accounts score higher.

From likes, comments.

Why it worked

Leads with a specific number, which is concrete enough to be worth a second of attention.
Uses concrete numbers instead of vague claims, which makes it credible and quotable.
Points at real customers, users or results as evidence rather than assertion.
Uses short lines and white space, which makes a long post feel quick to read.
Follows a clear Hook → Context → Context → Context → Landing shape, so the reader always knows where they are.
Ends on a short line that is easy to quote and repeat.

The mechanics

Hook: Leads with a number
Structure: Hook → Context → Context → Context → Landing
Style: Short lines with heavy white space, built to be scanned.
Tone: concrete, punchy
Mechanisms: Specificity, Social proof
Written for: Marketers and content teams

Analysis by ViralLoop — not written by the original author.

Topics

Marketing AI

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