The Vendor Crossover Doctrine: Anthropic Just Passed OpenAI In Business Spend, And Your Default AI Vendor May Be Wrong For The Next 12 Months

The Vendor Crossover Doctrine: Anthropic Just Passed OpenAI In Business Spend, And Your Default AI Vendor May Be Wrong For The Next 12 Months

The Vendor Crossover Doctrine: Anthropic Just Passed OpenAI In Business Spend, And Your Default AI Vendor May Be Wrong For The Next 12 MonthsStephen Diaz
Published on: 19/06/2026

For the first time since ChatGPT launched in November 2022, more US businesses pay Anthropic than OpenAI. Ramp AI Index May 2026 (published June 9) shows Anthropic at 41% vs OpenAI at 39.5% across 70,000+ companies. Anthropic grew from 0.03% adoption in June 2023 to 41% in May 2026, with annualized revenue climbing from $1B to $47B in 15 months. Claude Code alone is $2.5B annualized at 54% of enterprise coding spend. Run The Vendor Crossover Doctrine 5-question audit on every AI vendor charging more than $100/month.

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The SMB Crossover Moment: Why Anthropic Just Walked Past OpenAI On The Same Day It Came Knocking On Main Street

The SMB Crossover Moment: Why Anthropic Just Walked Past OpenAI On The Same Day It Came Knocking On Main Street

The SMB Crossover Moment: Why Anthropic Just Walked Past OpenAI On The Same Day It Came Knocking On Main StreetStephen Diaz
Published on: 15/05/2026

Anthropic just surpassed OpenAI on business adoption (34.4% vs 32.3% on Ramp's AI Index) the same week it launched Claude for Small Business with a 10-city free SMB Tour. Here is the Main Street AI Compounding Effect and a 7-day install for any 1-to-50-employee business.

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