Tencent has shared remarkable numbers about artificial intelligence’s role in its software development operations, announcing that half of the Chinese tech giant’s newly written code now comes from AI assistance. The disclosure appeared in the company’s “2025 Tencent R&D Big Data Report,” released October 24 to mark China’s “1024 Programmer’s Day.”

How AI Has Reshaped Development Workflows

The report reveals just how deeply AI has penetrated Tencent’s engineering operations: over 90% of the company’s engineers now work with CodeBuddy, the company’s AI programming assistant built on its HunYuan large language model. This integration has delivered measurable productivity gains, with average code writing time dropping 40% and overall R&D efficiency improving by more than 20%.

The scale of Tencent’s development work underscores the significance of these improvements. The company adds an average of 325 million lines of code monthly, processes 370,000 development requests per month, and executes 25.2 million builds. With 76% of Tencent’s workforce dedicated to research and development, three out of every four employees are involved in R&D work.

AI Quality Control Reaches 94% Coverage

Beyond code generation, AI has become integral to Tencent’s quality assurance processes. The report shows AI participates in 94% of code reviews, effectively serving as an automated “quality inspector” that conducts initial screening before human engineers step in. This AI-powered review process catches 28% of code defects, resulting in a 44% increase in problem detection efficiency and strengthened software quality control.

The company’s WeDev platform, which consolidates R&D tools and streamlines development processes, enables over 80 million daily data exchanges between tools, saving 5.3 million manual operations monthly. These optimizations have driven a 67% year-over-year increase in automation.

Real Results Across Business Units

Successful implementation at Tencent has produced impressive efficiency metrics across various business divisions. The WeChat backend team cut compilation time by 50%, while the WeChat Pay delivery cycle shortened by 31% with a 14% improvement in release quality. At Tencent Cloud, 65% of new code was generated using CodeBuddy, leading to a 31.5% reduction in bugs per thousand lines of code.