Grok 4 vs Gemini 4 Argon vs GPT-6 Astra vs Claude Fable 5.1

Head to head on 15 boards: GPT-6 Astra places best on 6, Gemini 4 Argon places best on 5, Claude Fable 5.1 places best on 4 and Grok 4 places best on 0. All 4 ranked on 2 of 19 boards.

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Grok 4Gemini 4 ArgonGPT-6 AstraClaude Fable 5.1

Board	Read	Grok 4	Gemini 4 Argon	GPT-6 Astra	Claude Fable 5.1
Chat2
Text ArenaArena ratingtodaytoday	Nov 9todaytoday		#21,523best of the picked	#311,475	#61,504
MultiChallengeScoretodaytoday	Nov 9todaytoday		#278.7%
Reasoning7
Epoch ECIECItodaytoday	Nov 9todaytoday	#78146.9	#6166.4	#1169.1best of the picked	#5166.9
ARC-AGI-2Scoretodaytoday	Nov 9todaytoday	#5416.0%	#591.3%	#195.0%best of the picked	#790.0%
GPQA DiamondAccuracytodaytoday	Nov 9todaytoday	#6887.0%	#196.4%best of the picked	#295.8%
AA IntelligenceIndextodaytoday	Nov 9todaytoday		#750.4	#356.9best of the picked	#950.0
HLEAccuracytodaytoday	Nov 9todaytoday			#154.8%best of the picked	#246.5%
LiveBenchGlobal averagetodaytoday	Nov 9todaytoday			#482.2%	#183.4%best of the picked
MMLU-ProAccuracy · staletodaytoday	Nov 9todaytoday	#1887.0%
Coding3
SWE-Bench ProResolvedtodaytoday	Nov 9todaytoday		#392.2%	#490.2%	#292.2%best of the picked
WebDev ArenaArena ratingtodaytoday	Nov 9todaytoday		#101,683	#31,770best of the picked	#51,746
Aider PolyglotPass rate · staletodaytoday	Nov 9todaytoday	#579.6%
Agents and tools3
Search ArenaArena ratingtodaytoday	Nov 9todaytoday	#381,123		#31,245best of the picked	#71,227
MCP AtlasPass ratetodaytoday	Nov 9todaytoday		#190.7%best of the picked		#387.2%
BFCLOverall accuracy · staletodaytoday	Nov 9todaytoday	#863.0%
Vision2
Document ArenaArena ratingtodaytoday	Nov 9todaytoday			#111,477	#21,499best of the picked
Vision ArenaArena ratingtodaytoday	Nov 9todaytoday			#171,285	#131,288best of the picked
Speed1
AA SpeedOutput speedtodaytoday	Nov 9todaytoday		#1028 tok/sbest of the picked	#1621 tok/s	#1422 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.