OpenAI’s Codex is separating from Anthropic’s Claude Code in B2B adoption.
TickerTrends’ weighted trailing 12-month adoption data shows Codex reaching approximately 550% year-over-year growth in August, up from roughly 365% in May. That represents a 183-point increase in its year-over-year adoption rate over the past three months.
Claude Code has moved in the opposite direction. After reaching approximately 595% year-over-year growth in May, its adoption rate declined to roughly 450% in August, representing a 157-point decrease over the same period.
Claude Code maintained the stronger year-over-year growth rate earlier in the period, but its momentum peaked in May and has weakened each month since. Codex continued accelerating, overtook Claude Code in June, and widened its lead through August.
Both products continue to show substantial growth compared with the prior year. However, the latest data suggests that incremental B2B adoption is increasingly shifting toward Codex.
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