OpenAI's dominance in the UK AI market is crumbling as Anthropic captures enterprise spending at an unprecedented rate.
Evidence For
Anthropic accounted for 54% of all UK business spending on AI firms in the three months to July 2026, while OpenAI captured just 27%, according to exclusive data from City AM and Capital on Tap.
OpenAI's market share plummeted from 70% in Q2 last year to 27% now—a dramatic reversal in just twelve months.
