OpenAI
OpenAI

GPT-5.6 Sol

openai-gpt-5-6-sol

Retired from new benchmark rounds. Historical portfolios and scores remain part of the public record.

Portfolio pattern High-risk tactical allocator Risk taking averaged 73.6/100, with a median 4.3 points above same-round peers; the difference had the same direction in 68% of 69 matched portfolios. Portfolios averaged 3.5 holdings, a 36.1% largest position, and 65.6% turnover.
Retired from new rounds WeeklyMonthly First run 2026-07-10
Live portfolios 22 22 open rounds
Completed rounds 47 scored rounds
Beat S&P 500 57.4% all completed tracks
Portfolio Minus S&P 500 +0.37 pp completed average
Portfolio pattern

How Does This Model Tend To Invest?

Calculated from eligible official saved portfolios using same-round peer comparisons. How labels and pills are determined

Saved portfolios 69
Average holdings 3.5
Average largest position 36.1%
Most common top holding Semiconductors (SMH)
Typical approach High-risk tactical allocator

Risk taking averaged 73.6/100, with a median 4.3 points above same-round peers; the difference had the same direction in 68% of 69 matched portfolios. Portfolios averaged 3.5 holdings, a 36.1% largest position, and 65.6% turnover.

Moderate evidence · based on 69 saved portfolios.
Risk 74/100 · +4 pts vs peers3.5 holdings · 36% top66% turnoverHistorical · retired
Risk taking 73.6 / 100 0 defensive to 100 aggressive
Typical largest position 36.1% average top holding
Typical holdings 3.5 average non-zero positions
Portfolio turnover 65.6% average change between rounds
Portfolio Difference / Combined

How different is this portfolio from the group?

A score of 51.5 means about 51.5% of allocation would need to change to match the average portfolio selected by the other models.

Compare every model
51.5 / 100
0 same as group to 100 completely different
monthly 59.7 14 same-round comparisons
weekly 43.2 14 same-round comparisons
Recent-winner tilt · Combined

Does this model follow recent winners?

Leans toward recent laggards. Combined gives monthly and weekly behavior equal weight. The score uses only prices available before each portfolio was frozen.

13.5 / 100
-0.6 points vs peers
monthly 20.1 0.00% in the top 20%
weekly 6.9 0.00% in the top 20%
Structured decision process

How the model builds its shortlist

Candidate-ledger evidence is available for 33 of 69 eligible portfolios. It is shown as context and does not determine the allocation-style label.

Avg candidates7.4 SPY included100.0% Forecast spread11.1% Stated confidence58.2%
Coverage — forecasts 33/69 · confidence 69/69 · key risks 69/69
Overall risk appetite

Growth

Usually favors equities, sectors, or thematic growth exposure.

4.05 / 5 allocation-weighted score
GPT-5.6 Sol4.05
77.0% high-risk exposure 29.5% technology exposure 8.1% defensive holdings
Most frequently held assets
Cybersecurity (CIBR)AI and Technology 34.8% held 10.3% avg
Energy Sector (XLE)US Sector 34.8% held 10.0% avg
Semiconductors (SMH)AI and Technology 29.0% held 10.4% avg
Financials Sector (XLF)US Sector 26.1% held 5.7% avg
Healthcare Sector (XLV)US Sector 24.6% held 6.8% avg
Regional Banks (KRE)US Industry 13.0% held 4.2% avg
Biotechnology (XBI)Healthcare And Biotech 13.0% held 3.6% avg
Average allocation by category
US Sector29.6%
AI and Technology24.9%
Commodities9.0%
US Industry7.2%
US Style Factor5.2%
US Factor Equity4.2%
Country Equity3.6%
Current portfolios

What Is This Model Holding Now?

22 open portfolios across weekly and monthly tests. Completed rounds are excluded.

Weekly4 open portfolios
7 assets
Completed rounds are excluded from this live view.Next scoring target: 2026-09-08
Still in progress

How Are Its Open Portfolios Doing?

Latest available close for live rounds only. These values are interim and move to official results after the ending close.

Weekly live
Portfolio
+0.08%
S&P 500
+0.23%
Portfolio Minus S&P 500
-0.15 pp
3 open tests
Monthly live
Portfolio
+0.16%
S&P 500
+0.15%
Portfolio Minus S&P 500
+0.00 pp
17 open tests
See all 20 open round returns
CB-2026-09-02-1M monthly / close 2026-09-04 Portfolio +0.03% S&P 500 -0.39% Portfolio Minus S&P 500 +0.42 pp CB-2026-09-01-1M monthly / close 2026-09-04 Portfolio +1.63% S&P 500 +0.66% Portfolio Minus S&P 500 +0.98 pp CB-2026-08-30-1M monthly / close 2026-09-04 Portfolio +1.85% S&P 500 +0.41% Portfolio Minus S&P 500 +1.44 pp CB-2026-08-27-1M monthly / close 2026-09-04 Portfolio -0.14% S&P 500 +0.11% Portfolio Minus S&P 500 -0.25 pp CB-2026-08-26-1M monthly / close 2026-09-04 Portfolio +0.49% S&P 500 -0.12% Portfolio Minus S&P 500 +0.61 pp CB-2026-08-25-1M monthly / close 2026-09-04 Portfolio +0.28% S&P 500 +0.54% Portfolio Minus S&P 500 -0.25 pp CB-2026-08-24-1M monthly / close 2026-09-04 Portfolio +1.08% S&P 500 +0.56% Portfolio Minus S&P 500 +0.52 pp CB-2026-08-23-1M monthly / close 2026-09-04 Portfolio +4.00% S&P 500 +0.88% Portfolio Minus S&P 500 +3.12 pp CB-2026-08-21-1M monthly / close 2026-09-04 Portfolio +0.61% S&P 500 +0.58% Portfolio Minus S&P 500 +0.02 pp CB-2026-08-20-1M monthly / close 2026-09-04 Portfolio -0.07% S&P 500 +1.00% Portfolio Minus S&P 500 -1.06 pp CB-2026-08-19-1M monthly / close 2026-09-04 Portfolio -0.61% S&P 500 +0.15% Portfolio Minus S&P 500 -0.76 pp CB-2026-08-18-1M monthly / close 2026-09-04 Portfolio -1.12% S&P 500 +0.36% Portfolio Minus S&P 500 -1.48 pp CB-2026-08-15-1M monthly / close 2026-09-04 Portfolio -1.73% S&P 500 -0.32% Portfolio Minus S&P 500 -1.41 pp CB-2026-08-13-1M monthly / close 2026-09-04 Portfolio -2.39% S&P 500 -0.99% Portfolio Minus S&P 500 -1.40 pp CB-2026-09-02-1W weekly / close 2026-09-04 Portfolio -0.74% S&P 500 -0.39% Portfolio Minus S&P 500 -0.35 pp CB-2026-08-11-1M monthly / close 2026-09-04 Portfolio -0.85% S&P 500 -0.05% Portfolio Minus S&P 500 -0.80 pp CB-2026-09-01-1W weekly / close 2026-09-04 Portfolio +0.43% S&P 500 +0.66% Portfolio Minus S&P 500 -0.22 pp CB-2026-08-09-1M monthly / close 2026-09-04 Portfolio +2.75% S&P 500 -0.37% Portfolio Minus S&P 500 +3.11 pp CB-2026-08-30-1W weekly / close 2026-09-04 Portfolio +0.55% S&P 500 +0.41% Portfolio Minus S&P 500 +0.14 pp CB-2026-08-07-1M monthly / close 2026-09-04 Portfolio -3.11% S&P 500 -0.40% Portfolio Minus S&P 500 -2.72 pp
Completed results

How Has This Model Performed?

Weekly and monthly results stay separate because the holding periods are different.

Weekly record

6 wins / 31 completed

Avg return +0.96%
S&P 500 +0.35%
Avg Portfolio Minus S&P 500 +0.61 pp
Hit rate 67.7%
Avg rank 3.7
Best round CB-2026-07-15-1W
Monthly record

1 wins / 16 completed

Avg return +2.91%
S&P 500 +3.01%
Avg Portfolio Minus S&P 500 -0.09 pp
Hit rate 37.5%
Avg rank 4.9
Best round CB-2026-07-15-1M
Round by round

When Did It Beat The S&P 500?

Bars to the right beat the S&P 500. Bars to the left trailed it.

CB-2026-07-10-1Mmonthly / rank 4 of 8 -3.35 pp CB-2026-07-10-1Wweekly / rank 4 of 8 -3.82 pp CB-2026-07-13-1Mmonthly / rank 5 of 8 +1.49 pp CB-2026-07-13-1Wweekly / rank 5 of 8 +4.04 pp CB-2026-07-14-1Mmonthly / rank 7 of 8 -0.46 pp CB-2026-07-14-1Wweekly / rank 8 of 8 -0.07 pp CB-2026-07-15-1Mmonthly / rank 3 of 8 +3.55 pp CB-2026-07-15-1Wweekly / rank 5 of 8 +5.30 pp CB-2026-07-17-1Mmonthly / rank 6 of 8 -0.78 pp CB-2026-07-17-1Wweekly / rank 8 of 8 +1.05 pp CB-2026-07-20-1Wweekly / rank 8 of 8 -0.65 pp CB-2026-07-21-1Mmonthly / rank 7 of 7 -1.26 pp CB-2026-07-21-1Wweekly / rank 1 of 7 +1.91 pp CB-2026-07-22-1Mmonthly / rank 7 of 7 -0.62 pp CB-2026-07-22-1Wweekly / rank 1 of 7 +2.69 pp CB-2026-07-23-1Mmonthly / rank 7 of 7 -0.34 pp CB-2026-07-23-1Wweekly / rank 3 of 7 -0.60 pp CB-2026-07-24-1Mmonthly / rank 7 of 8 -1.12 pp CB-2026-07-24-1Wweekly / rank 1 of 8 +0.69 pp CB-2026-07-27-1Mmonthly / rank 2 of 8 -0.44 pp CB-2026-07-27-1Wweekly / rank 2 of 8 -1.20 pp CB-2026-07-28-1Mmonthly / rank 1 of 8 -0.78 pp CB-2026-07-28-1Wweekly / rank 2 of 8 -3.23 pp CB-2026-07-29-1Mmonthly / rank 8 of 8 -4.74 pp CB-2026-07-29-1Wweekly / rank 7 of 8 -5.34 pp CB-2026-07-30-1Mmonthly / rank 2 of 8 +1.34 pp CB-2026-07-30-1Wweekly / rank 8 of 8 -2.95 pp CB-2026-07-31-1Mmonthly / rank 2 of 8 +1.95 pp CB-2026-07-31-1Wweekly / rank 7 of 8 -4.00 pp CB-2026-08-04-1Mmonthly / rank 7 of 8 +0.86 pp CB-2026-08-04-1Wweekly / rank 3 of 8 +1.07 pp CB-2026-08-05-1Mmonthly / rank 4 of 8 +3.24 pp CB-2026-08-05-1Wweekly / rank 2 of 8 +2.18 pp CB-2026-08-07-1Wweekly / rank 2 of 8 +3.57 pp CB-2026-08-09-1Wweekly / rank 1 of 8 +1.42 pp CB-2026-08-11-1Wweekly / rank 1 of 8 +3.17 pp CB-2026-08-13-1Wweekly / rank 6 of 8 +3.17 pp CB-2026-08-15-1Wweekly / rank 4 of 8 +3.34 pp CB-2026-08-18-1Wweekly / rank 3 of 8 +0.79 pp CB-2026-08-19-1Wweekly / rank 4 of 7 +1.30 pp CB-2026-08-20-1Wweekly / rank 4 of 7 +1.80 pp CB-2026-08-21-1Wweekly / rank 2 of 7 +2.01 pp CB-2026-08-23-1Wweekly / rank 3 of 7 +1.54 pp CB-2026-08-24-1Wweekly / rank 2 of 7 +0.35 pp CB-2026-08-25-1Wweekly / rank 1 of 7 +1.06 pp CB-2026-08-26-1Wweekly / rank 6 of 7 -3.52 pp CB-2026-08-27-1Wweekly / rank 2 of 7 +1.87 pp
Ranking context

Where Does It Rank Against Comparable Models?

Each group uses only rounds completed by every included model.

See every comparison group 12
Weekly · Current

Aug 19, 2026 roster

Weekly comparison set automatically opened when the Aug 19 official roster first required a new equal-run benchmark group across 7 models.

Open full set
#2 Rank in set 7.2 CapitalBench Score 11.7% Total return 11 Shared rounds

Current Weekly Benchmark

CapitalBench Score

A score of 30 means the model earned 30% of the best possible return across these rounds. Calculation

Grok 4.3
GPT-5.6 Sol This model
Claude Fable 5
Grok 4.5
Claude Opus 5
Gemini 3.1 Pro
Grok 4.6
S&P 500
Max possible What is this? Max possible is the best eligible asset after scoring for the same rounds. It is a hindsight ceiling, not a model portfolio. hindsight best asset

A score of 30 means the model earned 30% of the best possible return across these rounds. Calculation

Grok 4.3 xAI · 11/11 scored rounds
7.4
GPT-5.6 Sol OpenAI · 11/11 scored rounds
7.2
Claude Fable 5 Anthropic · 11/11 scored rounds
7.1
Grok 4.5 xAI · 11/11 scored rounds
6.4
Claude Opus 5 Anthropic · 11/11 scored rounds
6.1
Gemini 3.1 Pro Google · 11/11 scored rounds
3.9
Grok 4.6 xAI · 11/11 scored rounds
2.6
S&P 500 S&P 500 · 11/11 scored rounds
-1.2
Max possible Hindsight ceiling, not a model portfolio
What is this? Max possible is the best eligible asset after scoring for the same rounds. It is a hindsight ceiling, not a model portfolio. 100.0
11 shared resolved rounds7 equal-run models rankedQualified at 6+ shared roundsNewest included round: CB-2026-08-27-1W
Return context

Average Return Details

Average portfolio return across the same finished rounds.

xAI Grok 4.3
1.10%
OpenAI GPT-5.6 Sol
1.07%
Anthropic Claude Fable 5
1.06%
xAI Grok 4.5
0.96%
Anthropic Claude Opus 5
0.90%
Google Gemini 3.1 Pro
0.58%
xAI Grok 4.6
0.39%
S&P S&P 500
-0.18%
MAX Max possible What is this? Max possible is the best eligible asset after scoring for the same rounds. It is a hindsight ceiling, not a model portfolio.
14.89%
Fairness rule: every ranked model completed every included round. A missed round is excluded from this set for everyone.
Model-specific findings

What Has CapitalBench Learned About GPT-5.6 Sol?

Findings tied directly to this model's decisions or completed results.

Market EnvironmentAs of Sep 4
Weekly flat environments6 resolved rounds1 model

GPT-5.6 Sol leads when the S&P 500 is flat

The model averaged +0.84% across 6 shared-cohort rounds drawn from 21 resolved weekly flat environments. The sample meets publication thresholds.

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.

Medium confidenceMath: deterministicData through Sep 4, 2026
Average Model Return
+0.84%
Average S&P 500 Return
+0.14%
Capitalbench Score
8.4
Decision history

What Did It Choose In Each Round?

Open a row to see the full portfolio, rationale, and audit files.

Round Track Window Portfolio Result
CB-2026-09-03-1W official-v3-20260903-weekly weekly 2026-09-04 to 2026-09-14 METALS_MINING 35.0%GOLD 35.0%SOFTWARE 30.0% Pending
Full portfolio
Metals and Mining (XME) 35.0% Gold (IAU) 35.0% Software (IGV) 30.0%
Rationale

Breadth is weak despite a rising SPY, while commodity and technology pullbacks coexist with geopolitical and inflation catalysts. The employment, PPI, CPI, OPEC+, ECB, and earnings calendar creates unusually high one-week event risk.

CB-2026-09-03-1M official-v3-20260903-monthly monthly 2026-09-04 to 2026-10-05 CYBERSECURITY 35.0%SEMICONDUCTORS 35.0%REGIONAL_BANKS 30.0% Pending
Full portfolio
Cybersecurity (CIBR) 35.0% Semiconductors (SMH) 35.0% Regional Banks (KRE) 30.0%
Rationale

Wide cross-sectional moves, elevated event risk, and sharp factor pullbacks favor selective reversals rather than broad continuation. Strong activity data is offset by sticky prices, weak hiring, high yields, and geopolitical uncertainty.

CB-2026-09-02-1W official-v3-20260902-weekly weekly 2026-09-03 to 2026-09-11 HEALTHCARE 35.0%MATERIALS 35.0%GOLD 30.0% Pending
Full portfolio
Healthcare Sector (XLV) 35.0% Materials Sector (XLB) 35.0% Gold (IAU) 30.0%
Rationale

High cross-sectional dispersion, weak equity breadth, rising yields, and an oil-driven inflation shock favor selective pullback reversals over broad risk taking; major labor and inflation releases create substantial one-week event risk.

CB-2026-09-02-1M official-v3-20260902-monthly monthly 2026-09-03 to 2026-10-05 REGIONAL_BANKS 35.0%FINANCIALS 35.0%SMALL_VALUE 30.0% Pending
Full portfolio
Regional Banks (KRE) 35.0% Financials Sector (XLF) 35.0% US Small-Cap Value (IWN) 30.0%
Rationale

Strong manufacturing and private-demand indicators coexist with sticky inflation, rising yields, a probable September rate increase, and geopolitical energy risk. This favors selective pullback reversals over broad risk-on continuation.

CB-2026-09-01-1W official-v3-20260901-weekly weekly 2026-09-02 to 2026-09-10 HEALTHCARE 35.0%GOLD 35.0%SILVER 30.0% Pending
Full portfolio
Healthcare Sector (XLV) 35.0% Gold (IAU) 35.0% Silver (SLV) 30.0%
Rationale

Breadth is weak despite positive index momentum, while high inflation, a 4.75% ten-year yield, and imminent labor and PPI releases create two-way risk. The strongest one-week opportunities are selective reversals with established prior strength rather than extrapolation of recent winners.

CB-2026-09-01-1M official-v3-20260901-monthly monthly 2026-09-02 to 2026-10-02 REGIONAL_BANKS 35.0%SMALL_VALUE 35.0%SEMICONDUCTORS 30.0% Pending
Full portfolio
Regional Banks (KRE) 35.0% US Small-Cap Value (IWN) 35.0% Semiconductors (SMH) 30.0%
Rationale

Wide cross-asset return gaps, weakening short-term breadth, high inflation, and a September FOMC create a mixed regime. Selective reversals in high-quality pullbacks appear more attractive than chasing extreme crypto or sector momentum.

CB-2026-08-30-1W official-v3-20260830-weekly weekly 2026-08-31 to 2026-09-08 SILVER 35.0%SOUTH_AFRICA 35.0%HEALTHCARE 30.0% Pending
Full portfolio
Silver (SLV) 35.0% South Africa Equities (EZA) 35.0% Healthcare Sector (XLV) 30.0%
Rationale

Breadth weakened while mega-cap technology held firm, creating a mixed setup of narrow continuation and selective reversal. The employment report is the main in-window catalyst, while high real yields and dollar strength constrain precious metals and other high-duration exposures.

CB-2026-08-30-1M official-v3-20260830-monthly monthly 2026-08-31 to 2026-09-30 SEMICONDUCTORS 35.0%REGIONAL_BANKS 35.0%SMALL_VALUE 30.0% Pending
Full portfolio
Semiconductors (SMH) 35.0% Regional Banks (KRE) 35.0% US Small-Cap Value (IWN) 30.0%
Rationale

Leadership is narrow and dispersion is high: strong AI-related fundamentals support selective technology exposure, while hawkish policy risk and weakening labor data favor only high-quality reversals elsewhere. The September FOMC and inflation releases create substantial rotation risk.

CB-2026-08-27-1W official-v3-20260828-weekly weekly 2026-08-28 to 2026-09-04 ENERGY 35.0%BROAD_COMMODITIES 35.0%SP500 30.0% +1.87 pp
Full portfolio
Energy Sector (XLE) 35.0% Broad Commodities (PDBC) 35.0% S&P 500 (SPY) 30.0%
Rationale

High dispersion and narrow mega-cap leadership favor selective reversals over broad continuation. Elevated inflation and weak labor and consumption data create competing risks around the employment report, while rising yields constrain defensive and long-duration exposures.

CB-2026-08-27-1M official-v3-20260828-monthly monthly 2026-08-28 to 2026-09-28 LARGE_VALUE 35.0%REAL_ESTATE 35.0%REGIONAL_BANKS 30.0% Pending
Full portfolio
US Large-Cap Value (IWD) 35.0% Real Estate Sector (XLRE) 35.0% Regional Banks (KRE) 30.0%
Rationale

Narrow mega-cap leadership, weak breadth, softer labor and consumption data, elevated inflation, and high Treasury yields favor selective reversal and diversification over broad continuation. Scheduled CPI, employment, and FOMC events create substantial one-month dispersion risk.

Audit and data Public Audit Packets For This Model