GPT-6.1 Terra vs Gemini 4 Argon vs Claude Fable 5.1

• GPT-6.1 Terra
• Gemini 4 Argon
• Claude Fable 5.1

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Head to head on 8 boards: Claude Fable 5.1 places best on 4, GPT-6.1 Terra places best on 2 and Gemini 4 Argon places best on 2. All 3 ranked on 3 of 16 boards.

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GPT-6.1 TerraGemini 4 ArgonClaude Fable 5.1

Board	Read	GPT-6.1 Terra	Gemini 4 Argon	Claude Fable 5.1
Chat2
Text ArenaArena rating1dyesterday	Oct 261dyesterday		#11,517best of the picked	#51,503
MultiChallengeScore1dyesterday	Oct 261dyesterday		#278.7%
Reasoning6
AA IntelligenceIndex1dyesterday	Oct 261dyesterday	#1048.1	#752.6	#553.4best of the picked
Epoch ECIECI1dyesterday	Oct 261dyesterday		#5166.4	#4166.5best of the picked
ARC-AGI-2Score1dyesterday	Oct 261dyesterday		#591.3%best of the picked	#790.0%
GPQA DiamondAccuracy1dyesterday	Oct 261dyesterday		#196.4%
LiveBenchGlobal average1dyesterday	Oct 261dyesterday			#183.4%
HLEAccuracy1dyesterday	Oct 261dyesterday			#246.5%
Coding2
SWE-Bench ProResolved1dyesterday	Oct 261dyesterday		#392.2%	#292.2%best of the picked
WebDev ArenaArena rating1dyesterday	Oct 261dyesterday		#101,674	#51,742best of the picked
Agents and tools2
MCP AtlasPass rate1dyesterday	Oct 261dyesterday			#287.2%
Search ArenaArena rating1dyesterday	Oct 261dyesterday			#41,233
Vision2
Document ArenaArena rating1dyesterday	Oct 261dyesterday			#41,493
Vision ArenaArena rating1dyesterday	Oct 261dyesterday			#141,288
Speed1
AA SpeedOutput speed1dyesterday	Oct 261dyesterday	#2091 tok/sbest of the picked	#2279 tok/s	#2470 tok/s
Price1
AA PriceBlended price1dyesterday	Oct 261dyesterday	#17$2.00best of the picked	#24$4.00	#31$20.0

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.