Claude Opus 5.5 vs Gemini 4 Argon

• Claude Opus 5.5
• Gemini 4 Argon

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Head to head on 9 boards: Claude Opus 5.5 places best on 5 and Gemini 4 Argon places best on 5 (a tie counts for each). Both ranked on 9 of 15 boards.

Board	Read	Claude Opus 5.5	Gemini 4 Argon
Chat2
Text ArenaArena ratingtodaytoday	Nov 9todaytoday	#41,505	#21,523best of the picked
MultiChallengeScoretodaytoday	Nov 9todaytoday		#278.7%
Reasoning5
GPQA DiamondAccuracytodaytoday	Nov 9todaytoday	#3990.6%	#196.4%best of the picked
AA IntelligenceIndextodaytoday	Nov 9todaytoday	#259.1best of the picked	#750.4
Epoch ECIECItodaytoday	Nov 9todaytoday	#3168.4best of the picked	#6166.4
ARC-AGI-2Scoretodaytoday	Nov 9todaytoday	#393.3%best of the picked	#591.3%
LiveBenchGlobal averagetodaytoday	Nov 9todaytoday	#283.2%
Coding2
WebDev ArenaArena ratingtodaytoday	Nov 9todaytoday	#11,814best of the picked	#101,683
SWE-Bench ProResolvedtodaytoday	Nov 9todaytoday		#392.2%
Agents and tools2
MCP AtlasPass ratetodaytoday	Nov 9todaytoday	#585.4%	#190.7%best of the picked
Search ArenaArena ratingtodaytoday	Nov 9todaytoday	#111,213
Vision1
Vision ArenaArena ratingtodaytoday	Nov 9todaytoday	#51,296
Speed1
AA SpeedOutput speedtodaytoday	Nov 9todaytoday	#1125 tok/s	#1028 tok/sbest of the picked
Price1
AA PriceBlended pricetodaytoday	Nov 9todaytoday	#13$8.00best of the picked	#13$8.00best of the picked
Usage1
OpenRouterWeekly tokenstodaytoday	Nov 9todaytoday	#66.8T tok

Green marks the best placing among the picked where two or more are ranked; ties are marked for each. Ranks are each board's own order (lower is better), scores as the board published them. Dash: not on that board.