Opus 4.8 tops the LLM leaderboard with 95% on skill evals

We added Claude Opus 4.8 to our ongoing model benchmark. It scored 95% with skill context, which puts it 1.6 points above Opus 4.7 and 2.3 points above Cursor's Composer 2.5 Fast. It is also, by a meaningful margin, the slowest model we have tested. TL;DR Opus 4.8 scores 95% with skill context, taking the top spot from Opus 4.7. Its 81% baseline is the highest ever recorded in this benchmark, higher than every other model and remains top even when models run evals with skills loaded. Al...