Anthropic has overtaken OpenAI as the top enterprise AI model provider, according to a new report from Menlo Ventures.
Anthropic now claims 32% of the enterprise large language model market by usage. OpenAI trails with 25%. Two years ago, OpenAI held a dominant 50% while Anthropic was at just 12%. The trend has flipped fast.
In coding, Anthropic leads even harder, owning 42% of the enterprise market, more than double OpenAI’s 21%. 
Anthropic’s surge is tied to the release of Claude 3.5 Sonnet in June 2024, with Claude 3.7 Sonnet, launched in February 2025, pushing momentum further.
Google’s enterprise usage has also grown but remains behind the top two.
The Menlo report says enterprises favor closed models like those from Anthropic and OpenAI. Open source models are shrinking in use, dropping to 13% of daily workloads by mid-2025 from 19% earlier this year. Meta dominates the open source AI market.
Meanwhile, OpenAI still dominates consumer AI. It reported users send over 2.5 billion prompts to ChatGPT daily.
This market shift highlights a clear split: Anthropic leads in enterprise, OpenAI holds strong with consumers.
TechCrunch’s event runs in San Francisco, October 27-29, 2025.
The findings from Menlo Ventures align with anecdotal chatter in the industry, which suggested that enterprise and startup developers preferred Claude over OpenAI’s ChatGPT. Meanwhile, OpenAI has a strong foothold on the consumer side of the house. The company reported last week that its users send more than 2.5 billion prompts to ChatGPT a day.
The Menlo Ventures report found enterprises prefer closed models, which Anthropic and OpenAI use. More than half of enterprises replied that they don’t use open source models at all. Only 13% of enterprise daily workloads use open source models as of mid-year 2025, down from 19% at the beginning of the year. Meta still maintains dominance in the open source market.
