Claude Opus 5.5 tops ValsAI's RSI Index, first model to beat LM Training reference
scaling01 · x · 2026-09-23
Eval lab ValsAI reports that Claude Opus 5.5 takes #1 on its RSI Index and becomes the first model to beat the published reference on LM Training under its protocol — which ValsAI calls a major step forward for long-horizon agentic work.
Related event: Opus 5.5 Tops Vals AI RSI Index, Full RSI Forecast Moved Up to July 2027(4 posts)→
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