Kimi K2 Thinking vs Gemini 4 Argon vs Claude Fable 5.1 vs GPT-6 Astra

Head to head on 16 boards: Gemini 4 Argon places best on 6, GPT-6 Astra places best on 6, Claude Fable 5.1 places best on 4 and Kimi K2 Thinking places best on 0. All 4 ranked on 1 of 19 boards.

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Kimi K2 ThinkingGemini 4 ArgonClaude Fable 5.1GPT-6 Astra

Board	Read	Kimi K2 Thinking	Gemini 4 Argon	Claude Fable 5.1	GPT-6 Astra
Chat2
Text ArenaArena ratingtodaytoday	Nov 9todaytoday		#21,523best of the picked	#61,504	#311,475
MultiChallengeScoretodaytoday	Nov 9todaytoday	#2455.4%	#278.7%best of the picked
Reasoning7
Epoch ECIECItodaytoday	Nov 9todaytoday	#85145.5	#6166.4	#5166.9	#1169.1best of the picked
ARC-AGI-2Scoretodaytoday	Nov 9todaytoday		#591.3%	#790.0%	#195.0%best of the picked
AA IntelligenceIndextodaytoday	Nov 9todaytoday		#750.4	#950.0	#356.9best of the picked
HLEAccuracytodaytoday	Nov 9todaytoday			#246.5%	#154.8%best of the picked
GPQA DiamondAccuracytodaytoday	Nov 9todaytoday		#196.4%best of the picked		#295.8%
LiveBenchGlobal averagetodaytoday	Nov 9todaytoday			#183.4%best of the picked	#482.2%
MMLU-ProAccuracy · staletodaytoday	Nov 9todaytoday	#5681.0%
Coding4
SWE-Bench ProResolvedtodaytoday	Nov 9todaytoday		#392.2%	#292.2%best of the picked	#490.2%
WebDev ArenaArena ratingtodaytoday	Nov 9todaytoday		#101,683	#51,746	#31,770best of the picked
SWE-bench VerifiedResolved · staletodaytoday	Nov 9todaytoday	#1863.4%
Aider PolyglotPass rate · staletodaytoday	Nov 9todaytoday	#1959.1%
Agents and tools2
MCP AtlasPass ratetodaytoday	Nov 9todaytoday		#190.7%best of the picked	#387.2%
Search ArenaArena ratingtodaytoday	Nov 9todaytoday			#71,227	#31,245best of the picked
Vision2
Document ArenaArena ratingtodaytoday	Nov 9todaytoday			#21,499best of the picked	#111,477
Vision ArenaArena ratingtodaytoday	Nov 9todaytoday			#131,288best of the picked	#171,285
Speed1
AA SpeedOutput speedtodaytoday	Nov 9todaytoday		#1028 tok/sbest of the picked	#1422 tok/s	#1621 tok/s
Price1
AA PriceBlended pricetodaytoday	Nov 9todaytoday		#13$8.00best of the picked	#17$20.0	#17$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.