Ant Ling· 11 JunOpen Source LLM Development 2025: Landscape, Trends and Insights
Analysis of 135 open-source LLM projects across 19 domains
Ant Ling's analysis of the open-source LLM development ecosystem as of May 2025 identifies 135 projects across 19 technical domains, with AI surpassing Cloud Native as the most influential tech domain on 
GitHub in 2023.
Key trends include the rapid replication of closed-source tools as open-source clones, the abandonment of many AI tools (1,232 of 5,079 recorded), and the rise of agent frameworks, efficient inference engines (vLLM, SGLang), and reinforcement learning frameworks (Verl, OpenRLHF, AReaL).
