A new study of Vietnam-based GenAI Fund shows that OpenAI’s ChatGPT and Anthropic’s Claude are running nearly equal in overall platform adoption, but diverge sharply when builders are segmented by experience.

The report, released on Thursday, features 2,719 approved builders across 55 countries. It shows that beginners prefer ChatGPT while experts opt for Claude. “Beginners” refers to builders in their first one to two years of working with AI tools. “Experts” refers to builders with two or more years of hands-on experience writing production-ready code and building systems for enterprise deployment.

Across the full dataset, OpenAI’s ChatGPT leads platform adoption at 77.9 percent, followed by Anthropic’s Claude at 76.6 percent and Google’s Gemini at 61.1 percent. Further down the stack, DeepSeek sits at 18.2 percent, Hugging Face at 12.8 percent, Qwen at 11.6 percent, LangChain at 9.8 percent, Vertex AI at 7.7 percent, AWS Bedrock at 7.6 percent, Meta Llama at 6.8 percent, Groq at 6.7 percent, and Azure OpenAI at 5.2 percent.

Totals exceed 100 percent because 81.7 percent of builders use more than one platform simultaneously. 27.5 percent use at least one Chinese model.

As many as 27.5 of respondents utilize at least one Chinese AI model.

The split is also visible across role types. Among students, OpenAI leads at 84.1 percent, followed by Claude at 76.4 percent and Gemini at 72.9 percent.

For engineers, Claude leads at 84.4 percent over OpenAI at 79.2 percent and Gemini at 55.9 percent.

Among enterprise teams, Claude leads at 77.7 percent over OpenAI at 74.2 percent and Gemini at 55.3 percent.

The full experience breakdown tells a more granular story. Among builders with less than one year of experience, OpenAI stands at 79.3 percent and Claude at 70.9 percent. By one to two years of experience, Claude has already overtaken OpenAI, reaching 79.2 percent against OpenAI’s 78.2 percent.

At three to five years, the two platforms are essentially tied at 81.4 percent and 81.2 percent respectively. At six to ten years, Claude leads at 78.4 percent versus OpenAI’s 72.4 percent. Among builders with ten or more years of experience, both platforms stand at 73.8 percent.

The builder community is predominantly technical. Among 1,952 builders with language data, Python is used by 72.5 percent, JavaScript and TypeScript by 43.6 percent, Java by 17.5 percent, C and C++ by 14.9 percent, and Go by 8.9 percent.

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