With Claude models leading the way, Anthropic now holds the largest share of enterprise usage, particularly in coding and closed-model workloads.
A New Enterprise AI Leader Emerges
Anthropic has officially surpassed OpenAI as the top AI provider for enterprises, according to a new report from Menlo Ventures.
- Anthropic now commands 32% of enterprise large language model (LLM) usage by market share.
- OpenAI, once dominant, now holds 25%, a sharp decline from its 50% share in 2023.
This marks a dramatic shift in the enterprise AI landscape, fueled by Anthropic’s increasingly favored Claude model family.
Claude’s Rapid Rise in the Enterprise
The report attributes much of Anthropic’s surge to the Claude 3.5 Sonnet model released in June 2024, and its follow-up Claude 3.7 Sonnet in February 2025.
- These models have been praised for reliability, compliance readiness, and enterprise-grade coding performance.
- Developers cite Claude’s contextual reasoning and low hallucination rate as key advantages.
Dominating in Code Generation
Anthropic’s lead is even more striking in code-related enterprise use cases:
- 42% of enterprise code-generation tasks now run on Claude models.
- That’s twice the share of OpenAI, which sits at 21%.
This suggests that Claude is becoming the default LLM for developer teams, especially those with complex or regulated workloads.
OpenAI Still Reigns in Consumer Usage
While Anthropic dominates in the enterprise, OpenAI remains the leader among consumers.
- OpenAI recently reported over 2.5 billion prompts per day to ChatGPT.
- This underscores a clear bifurcation in the market:
- Claude for B2B,
- ChatGPT for B2C.
Closed Models Are Winning Over Enterprises
The Menlo report also reveals that enterprises strongly prefer closed models.
- Over 50% of respondents said they do not use open source models at all.
- Only 13% of daily enterprise workloads are handled by open source models — a drop from 19% earlier this year.
- Meta remains the dominant player in the open-source LLM segment, but usage is trending downward.
Google Gains Ground, Too
While the focus is on Anthropic and OpenAI, Google’s AI models have also seen modest growth in enterprise adoption.
- Though not yet a major threat, Google is gaining traction thanks to its deep cloud integration and Gemini model family.
What’s Driving the Shift?
Enterprises are choosing Anthropic’s models for a mix of practical and strategic reasons:
- Security and privacy controls
- Lower error rates in mission-critical applications
- Scalable deployment through major cloud platforms
- Strong performance in code intelligence, legal, and knowledge work
Meanwhile, OpenAI’s consumer-first strategy may have left enterprise customers seeking more specialized solutions.
