AI research lab Anthropic has overtaken OpenAI as the preferred provider of large language models (LLMs) among enterprises, according to a new report from Menlo Ventures released Thursday.
Anthropic now holds a 32% share of the enterprise LLM market by usage, edging past OpenAI, which accounts for 25%. This represents a significant shift from just two years ago when OpenAI commanded 50% of the enterprise market, while Anthropic held only 12%.
The report also highlights growing enterprise adoption of Google’s AI models over recent years, further intensifying competition in the space.
When it comes to AI models for coding, Anthropic’s lead is even more pronounced. The company holds a dominant 42% of the enterprise market share more than double OpenAI’s 21%.
Related: Anthropic Set To Join AI Elite With $170Billion Valuation.
Anthropic’s rapid rise is credited largely to the release of its Claude 3.5 Sonnet model in June 2024, which laid the groundwork for increased adoption. The momentum continued with the launch of Claude 3.7 Sonnet in February 2025.
These findings echo industry conversations suggesting that enterprise and startup developers favor Anthropic’s Claude models over OpenAI’s ChatGPT, which retains a strong position on the consumer side. OpenAI recently reported over 2.5 billion daily prompts to ChatGPT.
The Menlo Ventures report also reveals that enterprises tend to prefer closed AI models like those from Anthropic and OpenAI. Over half of the surveyed enterprises do not use open source models, and only 13% of enterprise daily AI workloads rely on open source, down from 19% at the start of 2025. Meta continues to lead the open source AI market.
