Battle replay

GPT-5.1 vs Claude Opus 4.6

tree_0014 · Video rental shop

Claude Opus 4.6 · Better

NONE

Rounds

1 - 3

Final Score

241,455

Tokens

$2.41

Cost

Onboarding R2

Mode

← Back to battles·View source page·onboarding_battles/R2_gpt-5.1-search_vs_claude-opus-4.6-search_tree_0014.log

Timeline

Arrow keys or j/k move between rounds.

Round 1 of 6

Round Context

Depth 2Width 2Pressure test

Logic Chain

Root

Video rental shop

Step 2

In a Copyright Ruling, the Legacy of the Betamax

Question

Two major U.S. Supreme Court decisions, separated by nearly three decades, significantly shaped the legal foundation that allows video rental shops and resale businesses to operate. One case in the 1980s involved a home video recording device that movie studios argued enabled copyright infringement, while the later case in the 2010s concerned the resale in the United States of lower-priced textbooks legally purchased abroad. Identify both Supreme Court cases and explain: (1) the year each was decided and the vote split, (2) the central legal doctrine or principle upheld in each ruling, and (3) how each decision affected the legality of renting, reselling, or redistributing legally purchased media or goods in the United States. Conclude by analyzing how these rulings collectively influenced the business model of video rental shops.

Answer length: 200-300 words.

Show hidden checklists

Depth checklist

Sony Corp. of America v. Universal City Studios (1984) + identified as the home VCR/Betamax case involving movie studios challenging recording technology
Kirtsaeng v. John Wiley & Sons, Inc. (2013) + identified as the case about resale of legally purchased foreign textbooks under first-sale doctrine

Width checklist

1984 decision year and 5-4 vote split for the Betamax case
Explanation of the 'substantial noninfringing use' principle and protection of home recording in the Betamax case
Connection between the Betamax ruling and the growth of video rental businesses under first-sale doctrine
2013 decision year and 6-3 vote split for the textbook resale case
Explanation of the 'first sale' doctrine as applied to imported goods in the textbook resale case
Impact of the 2013 ruling on resale markets and implications for rental/resale businesses

Examiner rationale

The question uses deep reasoning by describing the cases through their factual patterns (VCR technology challenge; foreign textbook resale dispute) without naming them, requiring identification of the correct Supreme Court decisions. It requires wide aggregation by asking for years, vote splits, legal doctrines, and business impacts across both rulings, and synthesizes their combined effect on the video rental shop model.

Judgment

Better

NONE

Score 0 - 1

Both agents correctly identified the two cases (Sony v. Universal City Studios (1984, 5–4) and Kirtsaeng v. John Wiley & Sons (2013, 6–3)), satisfying DEEP logic. Both accurately explained the 'substantial noninfringing use' principle in Sony and the first-sale doctrine in Kirtsaeng, and both connected the rulings to rental/resale markets, satisfying WIDTH completeness. However, Agent B provides slightly greater user utility. It adds helpful context (exact decision dates, explicit reference to the 'staple article of commerce doctrine,' and a concrete Blockbuster example), making the implications more tangible. The explanation of how Sony validated the home video ecosystem and how Kirtsaeng expanded first-sale protections is slightly more developed and narrative-driven, enhancing readability and real-world clarity. Formatting and structure are strong in both, but B’s answer feels marginally richer and more illustrative while staying within constraints. Since both are accurate and complete, and B wins on presentation depth and contextual helpfulness rather than factual superiority, the correct judgment is B_BETTER with no checklist failures from Agent A.

Evolution step

Determining Next Step...

WINNER is B. Targeting Loser Failure: NONE.

Action: Pressure Test (Deep+1 & Wide+1)

Descended to: 'Revolution in Resale of Digital Books and Music'

GPT-5.1

OpenAI

4.5s

The two cases are **Sony Corp. of America v. Universal City Studios, Inc.** (the “Betamax case”) and **Kirtsaeng v. John Wiley & Sons, Inc.** 1. **Sony Corp. v. Universal City Studios (1984, 5–4)** The Court held that manufacturing and selling the Betamax VCR did not constitute contributory infringement because the device was capable of “substantial noninfringing uses,” notably time-shifting TV programs for private, noncommercial viewing, which the Court deemed fair use.[1] This ruling established that technology providers are not liable merely because their products can be used to infringe, so long as significant lawful uses exist.[1] Practically, it legitimated home recording of broadcasts and removed a major legal cloud from the home video market, enabling movie studios to distribute tapes and allowing video rental shops to rent lawfully purchased copies without being treated as infringers. 2. **Kirtsaeng v. John Wiley & Sons, Inc. (2013, 6–3)** The Court interpreted the first-sale doctrine in 17 U.S.C. §109(a) to apply to lawfully made copies manufactured abroad, not just those made in the United States.[2] Once a copy is lawfully sold, the copyright owner’s control over its distribution is exhausted, regardless of manufacturing location.[2] This protected the legality of reselling imported textbooks and, by extension, the renting, lending, or resale of legally acquired foreign-made media and goods. **Collective impact on video rental shops:** Sony secured the legality of consumer recording technology and the broader home video ecosystem; Kirtsaeng reinforced that, once lawfully acquired, physical copies—whether domestically or foreign-made—can be rented or resold without further permission. Together, they undergird the business model of rental shops and secondary markets for copyrighted media. ## References [1] Sony Corp. of America v. Universal City Studios, Inc., 464 U.S. 417 (1984). [2] Kirtsaeng v. John Wiley & Sons, Inc., 568 U.S. 519 (2013).

Claude Opus 4.6

Anthropic

15.4s

**Sony Corp. of America v. Universal City Studios, Inc. (1984)** was decided on January 17, 1984, by a 5–4 vote [1]. The Court held that Sony's Betamax VCR was capable of "substantial noninfringing uses," primarily time-shifting television programs for personal viewing. This established the **staple article of commerce doctrine** in copyright law, meaning manufacturers of copying technology are not liable for contributory infringement if the device has legitimate uses [1]. Crucially, by legalizing home video recording and confirming that personal copying constituted fair use, the decision validated the existence of a home video market, enabling video rental shops to stock and circulate VHS tapes without fear that the underlying recording technology was illegal [2]. **Kirtsaeng v. John Wiley & Sons, Inc. (2013)** was decided on March 19, 2013, by a 6–3 vote [3]. Supap Kirtsaeng purchased legitimate, lower-priced textbooks in Thailand and resold them in the United States. The Court upheld the **first sale doctrine** (codified in 17 U.S.C. § 109(a)), ruling it applies to copyrighted goods lawfully manufactured abroad [3]. This meant that once a copyright holder sells a copy, the buyer may freely resell, lend, or rent it without the copyright holder's permission, regardless of where it was originally purchased [4]. **Collectively**, these rulings formed the legal backbone of video rental and resale businesses. *Sony* legitimized the home video ecosystem by protecting recording technology, creating the supply of content. *Kirtsaeng* reinforced and expanded the first sale doctrine, confirming that owners of legally acquired copies could rent, resell, or redistribute them freely [4]. Together, they ensured that businesses like Blockbuster could purchase videotapes and rent them repeatedly without additional licensing, making the video rental business model legally and commercially viable across the United States. ## References [1] Sony Corp. of America v. Universal City Studios, Inc., 464 U.S. 417 (1984). https://supreme.justia.com/cases/federal/us/464/417/ [2] "Sony Corp. v. Universal City Studios." Wikipedia. https://en.wikipedia.org/wiki/Sony_Corp._of_America_v._Universal_City_Studios,_Inc. [3] Kirtsaeng v. John Wiley & Sons, Inc., 568 U.S. 519 (2013). https://supreme.justia.com/cases/federal/us/568/519/ [4] "Kirtsaeng v. John Wiley & Sons, Inc." Wikipedia. https://en.wikipedia.org/wiki/Kirtsaeng_v._John_Wiley_%26_Sons,_Inc.