Last updated11 Apr 2026, 3:22 pm SGT
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Battle replay

Claude Opus 4.1 vs GPT-5.1

tree_0017 · Handheld game console

Claude Opus 4.1 · Much Better
WIDE
10
Rounds
7 - 5
Final Score
448,514
Tokens
$4.49
Cost
Round 4
Mode
← Back to battles·View source page·round4/R4_M1_claude-opus-4-1-search_vs_gpt-5.1-search_tree_0017.log

Timeline

Arrow keys or j/k move between rounds.

Round 1 of 10

Round Context

Depth 2Width 2Increase width
Logic Chain
Root

Handheld game console

Step 2

AllMusic is being updated.

Question

Identify the handheld game console family designed by the creator of the original Game Boy after he left Nintendo to found his own company, Koto Laboratory. This console lineage, manufactured by Bandai, consists of three distinct hardware iterations released between 1999 and 2002. List these three models in chronological order. For each model, provide the specific display technology used (e.g., FSTN, TFT) and its original launch price in Japanese Yen.

Answer length: 200-300 words.

Show hidden checklists
Depth checklist
  • Correctly identifies Gunpei Yokoi as the creator.
  • Correctly identifies the WonderSwan family as the target lineage.
  • Distinguishes between the three hardware revisions (Standard, Color, Crystal) based on the chronological release logic.
Width checklist
  • Identifies Model 1: WonderSwan (Original/Monochrome)
  • Model 1 Detail: Display is Monochrome FSTN
  • Model 1 Detail: Launch Price is ¥4,800
  • Identifies Model 2: WonderSwan Color
  • Model 2 Detail: Display is Color FSTN (STN)
  • Model 2 Detail: Launch Price is ¥6,800
  • Identifies Model 3: SwanCrystal
  • Model 3 Detail: Display is TFT (Polysilicon)
  • Model 3 Detail: Launch Price is ¥7,800
Examiner rationale

The question requires Deep Reasoning to link 'Game Boy creator' -> 'Gunpei Yokoi' -> 'Post-Nintendo Company (Koto Lab)' -> 'Bandai Partnership' -> 'WonderSwan'. It masks the entity names entirely. The Wide Aggregation is enforced by requesting specific attributes (Display Tech and Launch Price) for all three iterations (WonderSwan, WonderSwan Color, SwanCrystal), which often requires synthesizing data from multiple historical spec sheets or wikis rather than a single summary.

Judgment

Better
WIDE
Score 0 - 1

Both agents correctly identified the WonderSwan family. However, Agent B is the winner based on technical accuracy regarding the requested constraints. The prompt specifically asked for the 'display technology' for each model. Agent A incorrectly claimed the WonderSwan Color used a TFT display (it used FSTN), whereas Agent B correctly identified it as FSTN and noted that the switch to TFT occurred with the SwanCrystal. Agent B also used a superior formatting structure (bullet points) for the requested details. Agent B is not 'Much Better' because it provided a factually incorrect release date for the third model (November instead of July, though the date was not explicitly requested) and used generic text descriptions for citations rather than verifiable URLs.

Evolution step
Determining Next Step...
WINNER is B. Targeting Loser Failure: WIDE.
Action: Wide+1 (Increase Context Width)

Claude Opus 4.1

Anthropic

16.7s
The handheld game console family you're referring to is the WonderSwan series, created by Gunpei Yokoi after leaving Nintendo to establish Koto Laboratory. Bandai manufactured and released three models in this lineage between 1999 and 2002. **1. WonderSwan (March 4, 1999)** The original WonderSwan featured a monochrome FSTN (Film Super-Twisted Nematic) LCD display capable of showing 8 simultaneous shades from a palette of 16 grays [1][2]. It launched at a retail price of 4,800 Japanese Yen, positioning it as an affordable alternative to Nintendo's Game Boy [3]. The system ran on a single AA battery providing approximately 30 hours of gameplay. **2. WonderSwan Color (December 9, 2000)** The second iteration introduced a color TFT (Thin Film Transistor) LCD screen capable of displaying 241 colors simultaneously from a palette of 4,096 [1][4]. This model launched at 6,800 Japanese Yen while maintaining backward compatibility with original WonderSwan games [2]. The Color model increased battery consumption, requiring a single AA battery for about 20 hours of operation. **3. SwanCrystal (July 12, 2002)** The final model, SwanCrystal, featured an improved TFT LCD display with superior clarity and brightness compared to the WonderSwan Color [4][5]. It launched at 7,800 Japanese Yen, representing the premium offering in the WonderSwan family [3]. The enhanced screen technology further reduced battery life to approximately 15 hours per AA battery. This model retained full backward compatibility with both previous WonderSwan iterations while offering the best visual experience in the product line. ## References [1] https://en.wikipedia.org/wiki/WonderSwan [2] https://segaretro.org/WonderSwan [3] https://www.racketboy.com/retro/bandai-wonderswan-101-a-beginners-guide [4] https://videogamedatabase.fandom.com/wiki/WonderSwan [5] https://retrododo.com/wonderswan/

GPT-5.1

OpenAI

9.1s
The console family is the **WonderSwan** line, created by Gunpei Yokoi’s company Koto Laboratory and manufactured by Bandai. 1. **WonderSwan (1999)** - **Release (Japan):** March 4, 1999 - **Display technology:** Monochrome FSTN LCD (reflective, 224×144 resolution; 2.49-inch). Multiple sources describe it as a reflective monochrome FSTN LCD optimized for low power consumption.[1][2] - **Launch price:** **¥4,800** in Japan, significantly undercutting competitors like the Neo Geo Pocket Color and Game Boy Color.[1][3] 2. **WonderSwan Color (2000)** - **Release (Japan):** December 9, 2000 - **Display technology:** Color FSTN LCD (reflective, 2.9-inch, 241 colors on-screen from a larger palette).[2][4] It retained a reflective FSTN-type screen rather than moving to TFT to preserve battery life and cost. - **Launch price:** **¥6,800** in Japan.[2][3] 3. **SwanCrystal (2002)** - **Release (Japan):** November 8, 2002 - **Display technology:** Color TFT LCD (transmissive/absorptive, 2.8-inch, much higher clarity and response compared to FSTN).[4][5] This was the final evolution of the WonderSwan line, emphasizing screen quality over extreme frugality. - **Launch price:** **¥7,800** in Japan.[3][5] All three were exclusive to Japan and maintained the distinctive vertical-and-horizontal dual-control layout pioneered under Yokoi’s design philosophy. ## References [1] Bandai original WonderSwan Japanese launch materials / press info [2] WonderSwan hardware specifications – Japanese and English fan documentation [3] Contemporary Japanese news / price listings (launch coverage, 1999–2002) [4] WonderSwan Color and SwanCrystal technical breakdowns and reviews [5] Bandai SwanCrystal product pages and later catalog summaries