Opus 5.5 Tops Vals AI RSI Index, Full RSI Forecast Moved Up to July 2027

Vals AI's latest RSI Index puts Claude Opus 5.5 at No. 1, making it the first model to beat the LM Training reference baseline under its protocol; the forecast for full RSI has been moved up to July 2027.

2026-09-23 ~ 2026-09-23 · 4 related posts

• Claude Opus 5.5 tops ValsAI's RSI Index, first model to beat LM Training reference — scaling01 · 2026-09-23
• Vals AI RSI Index: Opus 5.5 Beats Human Baseline on One of Five Tasks, Pulling RSI Estimate to July 2027 — ResultBackground2450 · 2026-09-23
• Claude Opus 5.5 tops RSI Index, pushing Vals AI's full-RSI timeline to July 2027 — burny_tech · 2026-09-23
• Opus 5.5 tops Vals Index, first model to beat published reference on LM Training — burny_tech · 2026-09-23