We found that about half of the open source maintainers are currently using AI-based coding tools, with a significant age-related difference in usage. Those who use these tools report using them for code completion and suggestions, as well as for documentation and testing. Many respondents also express concerns about the accuracy and reliability of these tools. The survey highlighted several areas where AI could be used to improve open source software development, including documentation, issue triage, code quality and review, dependency management and security, and automating tasks such as changelog summaries and release notes generation.