Super exciting: Prime Intellect launched Prime Agent, an open-source coding harness that turns long-running AI sessions into a programming problem. Its only tool is a persistent IPython kernel. The model can programmatically search its history, call tools, launch persistent sub-agents and store useful state outside the active context. Prime Intellect: "The RLM treats context as a variable and subagent delegation as function calls inside a REPL." They reportstrong gains across long-context and long-horizon tasks. With Opus 5, Prime Agent scored 95.5% on ARC-AGI-3, narrowly above the benchmark’s reported 95.4% human expert baseline. It also built working SEGA Genesis and Game Boy Color emulators from scratch in Rust on a preview benchmark :D