Battle replay

DeepSeek V3.2 vs Sonar Pro

tree_0028 · Jeep History

DeepSeek V3.2 · Much Better

WIDE

Rounds

2 - 0

Final Score

453,933

Tokens

$4.54

Cost

Onboarding R4

Mode

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Timeline

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Round 1 of 1

Round Context

Depth 2Width 2Mercy rule

Logic Chain

Root

Jeep History

Step 2

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Question

Trace the evolutionary milestones of the 'Civilian Jeep' (CJ) series by identifying four specific models described in historical records between 1945 and 1976. You must identify: (1) the first civilian model introduced in 1945 and the specific model number of its transmission; (2) the 1953 variant that featured a taller grille and hood, including the name of the engine that necessitated this design change; (3) the 1955 model based on the Korean War M-38A1 and its total production lifespan in years; and (4) the 1976 model that extended the wheelbase specifically to accommodate a new mechanical feature, and what that feature was.

Answer length: 200-300 words.

Show hidden checklists

Depth checklist

Identify Model 1: CJ-2A
Identify Model 2: CJ-3B
Identify Model 3: CJ-5
Identify Model 4: CJ-7

Width checklist

Transmission model for the 1945 vehicle: T-90A
Engine name for the 1953 vehicle: Hurricane F-Head four-cylinder
Production lifespan for the 1955 vehicle: 30 years
Mechanical feature necessitating the 1976 wheelbase change: Automatic transmission

Examiner rationale

The question requires Deep reasoning to map specific historical descriptions (dates, design origins like M-38A1, and design reasons like 'taller hood') to the correct model names without those names being provided in the prompt. It requires Wide aggregation to retrieve distinct technical specifications (transmission codes, engine names, production stats) scattered across different paragraphs of the text.

Judgment

Much Better

WIDE

Score 2 - 0

Agent A correctly identified all four models and answered the specific sub-constraints for each, including the correct production lifespan of the CJ-5 (29 years, ending in 1984). Agent B failed significantly on the third constraint, incorrectly stating the CJ-5's lifespan was only 21 years (ending in 1975), whereas the CJ-5 was actually produced until 1983/84. While Agent B had superior formatting (bullet points), the factual error regarding the lifespan is a critical failure on a specific prompt constraint.

Evolution step

[GAME OVER] Mercy Rule Triggered (Diff >= 2.0)!

DeepSeek V3.2

DeepSeek

11.2s

The first civilian Jeep model, introduced in 1945, was the CJ-2A (Civilian Jeep 2A), which was equipped with the T-90 three-speed manual transmission [1][2]. The 1953 variant, known as the CJ-3B, featured a taller grille and hood to accommodate the new, taller F-head "Hurricane" four-cylinder engine [1][3]. In 1955, the CJ-5 was introduced, based directly on the military M-38A1 from the Korean War. This model had an extraordinarily long production lifespan of 29 years, running from 1955 until its discontinuation in 1984 [1][4]. Finally, the 1976 model was the CJ-7, which extended the wheelbase by 10 inches compared to the CJ-5. This redesign was specifically necessary to accommodate a new automatic transmission option, which required more space in the chassis [1][5]. ## References [1] Jeep CJ. (n.d.). In *Wikipedia*. Retrieved from https://en.wikipedia.org/wiki/Jeep_CJ [2] A History of the Jeep CJ. (n.d.). Retrieved from https://classiccars.com/journal/a-history-of-the-jeep-cj [3] Jeep CJ-3B. (n.d.). In *Wikipedia*. Retrieved from https://en.wikipedia.org/wiki/Jeep_CJ-3B [4] Jeep CJ-5. (n.d.). In *Wikipedia*. Retrieved from https://en.wikipedia.org/wiki/Jeep_CJ-5 [5] Jeep CJ-7. (n.d.). In *Wikipedia*. Retrieved from https://en.wikipedia.org/wiki/Jeep_CJ-7

Sonar Pro

Perplexity

4.2s

The Civilian Jeep (CJ) series evolved from military roots post-WWII, with key milestones as follows. (1) The first civilian model, introduced in 1945, was the **CJ-2A**, featuring the **T90A** (or Warner T-90) 3-speed transmission, upgraded from the military T-84J for civilian durability.[1][2][3] (2) The 1953 variant, **CJ-3B**, introduced a taller grille and hood to accommodate the larger **"Hurricane" F-head engine** (replacing the L-head "Go Devil"), improving power while retaining the 80-inch wheelbase.[6] (Note: Search results detail CJ-2A extensively but confirm CJ-3B progression via Wikipedia lineage; engine change is standard historical record.) (3) The 1955 model, **CJ-5**, was based on the Korean War **M-38A1** with a lengthened 81-inch wheelbase for stability; its total production lifespan spanned **21 years** (1955-1975).[6] (4) The 1976 **CJ-7** extended the wheelbase to 93.5 inches specifically to accommodate a **automatic transmission option**, enhancing civilian comfort alongside the existing manual.[6] These models marked shifts toward civilian utility: CJ-2A prioritized post-war availability, CJ-3B power, CJ-5 refinement from military design, and CJ-7 modernization.[1][6] (Word count: 248) ## References [1] https://www.motortrend.com/features/1401-1945-cj-2a-jeep-encyclopedia [2] https://www.automobile-catalog.com/car/1945/1306565/willys_universal_jeep_cj-2a.html [3] https://www.kaiserwillys.com/tech-guide/46-49-willys-cj-2a/45-49-cj-2a-general-specs/ [6] https://en.wikipedia.org/wiki/Jeep_CJ