OpenAI — Enterprise Market Share: 25%

NoteThe source directly confirms the claim. The Menlo Ventures 2025 Mid-Year LLM Market Update explicitly states: 'By the end of 2023, OpenAI commanded 50% of the enterprise LLM market, but its early lead has eroded. Today, it captures just 25% of enterprise usage—half of what it held two years ago.' The claim's exact stored value of 25 matches the source's stated figure. The temporal context (2025-07, mid-2025) aligns with the source publication date (July 31, 2025). The additional context about Anthropic rising to 32% is also confirmed in the source.