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  1. Home
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  3. GPT-5.1 Codex Max
  4. Mini LBO Underwrite

See how GPT-5.1 Codex Max compares on this challenge:

  • GPT-5.1 Codex Max vs Claude Sonnet 4.6
  • GPT-5.1 Codex Max vs Gemini 3.1 Pro Preview
  • GPT-5.1 Codex Max vs Z.ai: GLM 5

4 models have responded to the "Mini LBO Underwrite" challenge. Compare their approaches side-by-side on RIVAL. This response is part of RIVAL's open dataset of 5,600+ AI model responses.

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Back to GPT-5.1 Codex Max

Mini LBO Underwrite

Gpt 5 1 Codex Max's response to the 'Mini LBO Underwrite' challenge.

GPT-5.1 Codex Max
February 8, 2026
Text

?
Prompt

You are underwriting a 5-year LBO for a private equity investment committee. Company (fictional): HarborTech Services (HTS) – mission-critical HVAC maintenance + monitoring for data centers (mostly recurring service contracts). Use only the information below. Do NOT browse the web. This is a fictional exercise. ENTRY (close at end of FY2025) - FY2025 revenue: $900m - FY2025 EBITDA: $120m (13.3% margin) - Purchase price: 12.0x EBITDA - Transaction fees: 2.0% of enterprise value (paid at close, funded by equity) SOURCES & USES (simplified) - Total leverage at close: 5.5x EBITDA - Term Loan: 4.0x EBITDA, 9.0% cash interest, 1.0% annual amortization - Mezzanine: 1.5x EBITDA, 12.0% cash interest + 2.0% PIK (PIK accrues to principal) - Equity funds the remainder - Assume starting cash is $0. - Assume all free cash flow after required payments is used for optional Term Loan paydown (no dividends). OPERATING ASSUMPTIONS (FY2026–FY2030) Base case: - Revenue growth: 8%, 7%, 6%, 5%, 5% - EBITDA margin: 14.0%, 15.0%, 16.0%, 16.5%, 17.0% - Capex: 3.0% of revenue - Change in NWC: 0.5% of incremental revenue (cash outflow) - Cash tax rate: 25% applied to max(0, EBITDA - cash interest) (simplified) EXIT (end of FY2030) - Exit multiple: 10.5x FY2030 EBITDA - Exit fees: 1.0% of enterprise value - Mezzanine (including PIK) is repaid at exit. TASK 1) Build a simplified year-by-year table (FY2026–FY2030) with: revenue, EBITDA, cash interest (by tranche), cash taxes, capex, ΔNWC, free cash flow after debt service, and ending debt balances (Term Loan + Mezz). 2) Compute equity IRR and MOIC. 3) Provide a sensitivity table of equity IRR vs exit multiple (9.5x / 10.5x / 11.5x) and exit-year EBITDA margin (16% / 17% / 18%). 4) List 5 underwriting risks and 5 concrete downside protection levers. Keep it concise, but show the math clearly.

GPT-5.1 Codex Max
Response

gpt-5.1-codex-max logo
GPT-5.1 Codex MaxMini LBO Underwrite
gpt-5.1-codex-max logo
GPT-5.1 Codex Max

1) Projected cash flows & debt (FY2026–FY2030, $m)
(“FCF after debt service” = after interest, taxes, capex, ΔNWC, mandatory amort; applied to optional TL paydown)

YearRevenueEBITDATL Cash Int.Mezz Cash Int.Cash TaxesCapexΔNWCFCF after debt serviceEnd TL Bal.End Mezz Bal. (incl. PIK)
2026972.0136.143.221.617.829.20.3619.1456.1183.6
20271,040.0156.041.122.023.231.20.3433.4417.9187.3
20281,102.4176.437.622.529.133.10.3149.0364.1191.0
20291,157.5190.032.822.933.634.70.2860.9298.3194.8
20301,215.4206.626.823.439.136.50.2975.7217.8198.7
  • Mandatory TL amort: $4.8m/yr (included in FCF calc).
  • Optional TL paydown each year uses FCF after debt service.
  • Mezz PIK 2%/yr accrues to principal (balances shown above).

Exit (end FY2030, base case)

  • FY2030 EBITDA: $206.6m; Exit @ 10.5x = EV $2,169.5m
  • Exit fee 1% EV: $21.7m
  • Net debt repaid: TL $217.8m + Mezz $198.7m = $416.5m
  • Equity proceeds: $2,169.5 – $21.7 – $416.5 ≈ $1,731.3m
  • Equity invested (incl. fees): $808.8m
  • MOIC ≈ 2.14x; 5-yr IRR ≈ 16.4%

2) Equity IRR/MOIC (base): MOIC 2.14x; IRR ~16.4%.

**3) Sensitivity:

Mini LBO Underwrite

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This output is part of our open dataset — 5K+ AI responses across 200 models

About GPT-5.1 Codex Max

Capabilities

ConversationReasoningCode GenerationAnalysis

Categories

TextCodeMultimodal

Specifications

Provider
Openai
Released
2025-12-04
Size
XLARGE

Keep exploring

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Claude Sonnet 4.6's version

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