Anthropic Overtakes OpenAI in Enterprise AI Market Share

A new report indicates that Anthropic has emerged as the leading provider of large language models (LLMs) for businesses, surpassing OpenAI in enterprise usage. According to data from Menlo Ventures, Anthropic now commands 32% of the enterprise LLM market based on usage, while OpenAI has fallen to second place with 25%.

This represents a significant shift from just two years prior. In 2023, OpenAI dominated the enterprise market with a 50% usage share, while Anthropic held only 12%. Since then, Anthropic’s popularity has steadily climbed, coinciding with a notable decline in OpenAI’s enterprise adoption. Google has also seen increased business uptake of its models, though it continues to trail both Anthropic and OpenAI.

Anthropic’s ascendancy is particularly pronounced in the realm of enterprise coding. It now holds 42% of the market for code generation and development, double the share of OpenAI, which stands at 21%. This suggests a growing preference among developers for Anthropic’s tools when building software or integrating artificial intelligence into their products.

A key factor in Anthropic’s rapid rise is the successful release of its Claude 3.5 Sonnet model in June 2024, which was widely praised for its performance. The subsequent launch of Claude 3.7 Sonnet in February 2025 further boosted usage. These advancements have reportedly convinced more businesses to transition from competing platforms to Anthropic’s offerings. The report corroborates observations within the tech industry that enterprise developers increasingly favor Anthropic’s Claude models over OpenAI’s ChatGPT for business applications.

Despite this shift in the enterprise sector, OpenAI maintains its lead in consumer-facing AI. The company recently reported that more than 2.5 billion prompts are sent to ChatGPT every day.

The Menlo Ventures study also highlights a broader trend in enterprise AI adoption: a strong preference for closed-source AI models, such as those offered by Anthropic and OpenAI, over open-source alternatives. More than half of the surveyed enterprises indicated they do not use open-source models at all. In fact, daily enterprise use of open-source models has declined to just 13% as of mid-2025, down from 19% earlier in the year. While Meta continues to lead the open-source AI space, its models see limited integration within corporate environments.