
- Report finds 78% choose OpenAI models, but many are split over multiple families and generations
- Anthropic started picking up form mid-2025, with 75% using Sonnet/Opus 4.5
- M365 Copilot is still a firm favorite, far outpacing Gemini for Workspace
ChatGPT maker OpenAI remains the most popular model provider chosen by enterprises, according to new data from Global 2000 company CIOs, with virtually four in five (78%) choosing OpenAI's models for production.