Monthly model leadership changes with the S&P 500 environment
Grok 4.3 leads down environments at -1.27% across 5 tests; Claude Opus 4.7 leads up environments at +2.79% across 3 tests.
Market environments group resolved rounds by the S&P 500 return over the same weekly or monthly window. Models are compared only on shared rounds; high confidence requires at least six observations and stable leadership.
- Down Leader Average Return
- -1.27%
- Down Shared Rounds
- 5
- Down Leader Stability
- 0.60