Anthropic Gains Enterprise AI Leadership Over OpenAI

Market Shift Confirmed: A new Menlo Ventures report reveals that Anthropic's AI models have become the preferred choice for enterprises, capturing 32% market share compared to OpenAI's 25%. This marks a dramatic reversal from 2023 when OpenAI dominated with 50% share versus Anthropic's 12%.

The Turning Point: Claude3.5Sonnet Launch

The June 2024 release of Claude3.5Sonnet proved pivotal, with its successor Claude3.7Sonnet accelerating adoption. Enterprises particularly favor Anthropic for programming applications, where it commands 42% share versus OpenAI's 21%. Google's models have also gained traction but trail both competitors.

Consumer vs. Enterprise Divide

While Anthropic leads in business applications, OpenAI maintains consumer dominance with 2.5 billion daily prompts to ChatGPT. This divergence highlights how model selection criteria differ between professional and personal use cases.

The Closed-Source Preference

The report identifies a strong enterprise preference for proprietary models:

• 53% of companies avoid open-source solutions entirely
• Only 13% rely on open-source for core operations (down from 19% in early 2025)
• Meta remains the open-source leader despite the overall decline

Key Points:

• 🚀 Market leadership change: Anthropic (32%) overtakes OpenAI (25%) in enterprise LLMs
• 📈 Growth trajectory: Anthropic's share quadrupled since 2023 while OpenAI's halved
• 💻 Programming dominance: 42% enterprise adoption for Anthropic vs. 21% for OpenAI
• 🔒 Security focus: Enterprises increasingly choose closed-source models (87% adoption)
• 📱 Consumer stronghold: ChatGPT maintains 2.5B daily prompts despite enterprise decline