SmartApe AI

Oct 11, 2026 · Artificial Intelligence

RSIGym: Open-Source RSI Research Environment for Joint Model-Harness Optimization

Evolvent AI and NUS researchers open-source RSIGym, an Everything-as-a-Service research environment for recursive self-improvement, introducing the RSI-Index metric to evaluate agents' ability to jointly optimize model weights and execution harnesses, with experiments showing Opus 5 achieving 0.4809 RSI-Index and significant gains on SWE-bench and AIME benchmarks.