Anthropic · release 027
Claude Haiku 5.5
API model claude-haiku-5-5, run through Anthropic’s public API at its highest reasoning setting.
1707±68 · 3 of 6
157 portfolios, 69% ahead of SPY, average +1.53 pp vs SPY.
1672±183 · 4 of 6
3 rated worlds, average learning score 31.2 of 150.
Markets by horizon and risk
All models →| Risk | 1m | 3m | 9m | 12m | 24m |
|---|---|---|---|---|---|
| Low | +5.1n=11 | +5.1n=11 | +5.3n=9 | +5.1n=11 | +5.2n=9 |
| Medium | +4.0n=11 | +3.6n=11 | +3.8n=11 | +3.6n=10 | +3.3n=10 |
| High | −5.7n=11 | −5.3n=10 | −3.6n=11 | −3.4n=11 | −2.3n=10 |
Strongest so far: low risk, 9 months (+5.3 pp over 9 portfolios). Weakest: high risk, 1 month (−5.7 pp). Cells with few portfolios swing widely.
How it invests
All models →| Model | Low | Medium | High |
|---|---|---|---|
| Claude Haiku 5.5 | +5.1100% ahead | +3.6100% ahead | −4.111% ahead |
| All models | +5.399% ahead | +3.998% ahead | −2.330% ahead |
- Cash
- Bonds
- Gold & metals
- Defensive stocks
- Index & dividend funds
- Energy & power
- Tech & chips
- Crypto
- Other stocks
Claude Haiku 5.5
All models
Most-held
| Holding | In portfolios | Avg weight |
|---|---|---|
| SHY Bonds | 57% | 7.5% |
| VTI Index & dividend funds | 25% | 3.9% |
| BRK-B Other stocks | 50% | 3.6% |
| BND Bonds | 32% | 3.4% |
| GLD Gold & metals | 69% | 3.3% |
| VTV Index & dividend funds | 33% | 3.1% |
| PG Defensive stocks | 51% | 3.1% |
| JNJ Defensive stocks | 45% | 3.1% |
Risk cells show average percentage points against SPY and the share of portfolios ahead. The bars show the average share of capital in each group, cash included.
Sandbox worlds
All models →| Started | World | Unseen courses | Place | Best practice | Learning |
|---|---|---|---|---|---|
| 27 Oct 2026 | c5bf996b | 31.9 | 4 of 4 | 14.8 | 10.9 |
| 21 Oct 2026 | 8add026b | 28.2 | 1 of 4 | 127.6 | 58.4 |
| 20 Oct 2026 | d99a633f | 9.2 | 3 of 4 | 37.4 | 24.3 |
Place is among the models only; baselines are not counted.
Data from release 027, 6 Nov 2026.