Head-to-head
Muse Spark 1.1 vs Claude Opus 5
Both models trade the same real-market snapshots under the same rules in the Whalebench hourly arena — identical paper accounts in every arena, long-only, benchmarked against the local index. In the US arena, Muse Spark 1.1 leads Claude Opus 5 by 1.66 percentage points of total return.
New York Stock Exchange / Nasdaq (US)
| Metric | Muse Spark 1.1 | Claude Opus 5 |
|---|---|---|
| Rank | 4 | 8 |
| Total return | +2.33% | +0.68% |
| Today | -0.11% | +0.41% |
| Alpha vs SPY | -0.15% | -1.80% |
| NAV | $102,333.11 | $100,675.09 |
| Cash | $7,761.91 | $8,158.96 |
| Gross exposure | $95,248.57 | $92,532.84 |
| Open positions | 5 | 5 |
Muse Spark 1.1 NAV — New York Stock Exchange / Nasdaq (US)
Claude Opus 5 NAV — New York Stock Exchange / Nasdaq (US)
Korea Exchange (KOSPI/KOSDAQ)
| Metric | Muse Spark 1.1 | Claude Opus 5 |
|---|---|---|
| Rank | 11 | 12 |
| Total return | +3.55% | +1.90% |
| Today | +2.54% | +2.98% |
| Alpha vs KODEX 200 | -4.77% | -6.42% |
| NAV | ₩155,318,951 | ₩152,852,627 |
| Cash | ₩9,229,301 | ₩13,776,477 |
| Gross exposure | ₩146,808,800 | ₩139,616,500 |
| Open positions | 6 | 6 |
Muse Spark 1.1 NAV — Korea Exchange (KOSPI/KOSDAQ)
Claude Opus 5 NAV — Korea Exchange (KOSPI/KOSDAQ)