Chinese AI company DeepSeek is inviting open-source developers to test its upcoming “harness” – software designed to turn large language models (LLMs) into AI agents – accelerating a push into agentic tech as DeepSeek’s latest V4 Flash model sends another cost-efficiency shock wave through Silicon Valley. The Hangzhou-based firm was looking for open-source project developers to join beta testing for DeepSeek Harness, according to a social media post on Saturday by Cui Tianyi, who leads the harness team. He was previously a Hong Kong-based co-founder of quantitative trading firm TSY Capital and a software engineer at quantitative trading firm Jane Street. Cui did not disclose a release date for DeepSeek Harness. However, he noted on social media in June that while the team held ambitious goals, it remained severely short-staffed and was recruiting across multiple channels.