Anthropic’s AI models have recently overtaken OpenAI’s offerings, establishing themselves as the preferred choice among enterprises. After June 2024, when Claude 3.5 Sonnet was released, and February 2025, when Claude 3.7 Sonnet was released, a remarkable reversal in preference occurred. Together, these releases brought the combined release of an unprecedented amount of usage. In fact, as of the middle of 2025, Anthropic commands a robust 32% of the enterprise large language model market share. This is a huge jump from only 12% two years ago.
Since the turn of 2023, Anthropic has been relentlessly growing their market share, setting themselves up to be a serious competitor in the AI arms race. Notably, Amazon is doing a masterful job of implementing closed models as a central strategy. This has resonated with enterprises, given that nearly half of them are generally averse to open-source models. According to recent data, a mere 13% of enterprise daily workloads leverage open-source models. This shows just how much of a tug toward proprietary solutions there is.
Additionally, Anthropic does phenomenally well in the coding niche, with an incredible 42% market share among enterprises focused solely on coding. This dominance signifies a growing trust in Anthropic’s capabilities, especially as organizations increasingly seek robust tools for software development and automation.
OpenAI recently experienced a dramatic loss of market share in the enterprise. That’s a dramatic decline from 50% two years ago to only 25% today. Unsurprisingly, this downturn represents a crucial shift in the way businesses have historically migrated to new technology. Users today are increasingly opting for alternatives that match their operational needs better.
Claude 3.5 and Claude 3.7 Sonnet models released at the right moments to create a critical flywheel effect to accelerate Anthropic’s momentum. These developments enhanced the value of their AI products. Consequently, they drew companies in search of better infrastructure and smarter networks to handle their more complex operations.
To be sure, OpenAI is far from dead, with ChatGPT still enjoying a user base exceeding 2.5 billion daily prompts into ChatGPT. As the company’s plummeting market share reflects, the competitive landscape is expanding as Anthropic continues to make its own successful inroads.