Union Alpha vs Muse Spark 1.3 vs Claude Fable 5.1 vs Kimi K3

Head to head on 12 boards: Claude Fable 5.1 places best on 9, Muse Spark 1.3 places best on 3, Union Alpha places best on 0 and Kimi K3 places best on 0. All 4 ranked on 1 of 14 boards.

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SUnion AlphaMuse Spark 1.3Claude Fable 5.1Kimi K3

Board	Read	SUnion Alpha	Muse Spark 1.3	Claude Fable 5.1	Kimi K3
Chat1
Text ArenaArena ratingtodaytoday	Sep 27todaytoday		#71,494	#51,501best of the picked	#131,488
Reasoning6
LiveBenchGlobal averagetodaytoday	Sep 27todaytoday	#2976.1%	#581.6%	#183.4%best of the picked	#1279.2%
AA IntelligenceIndextodaytoday	Sep 27todaytoday		#448.1	#253.4best of the picked	#1243.6
Epoch ECIECItodaytoday	Sep 27todaytoday		#15156.9	#2165.0best of the picked	#12157.7
ARC-AGI-2Scoretodaytoday	Sep 27todaytoday			#590.0%best of the picked	#2660.4%
HLEAccuracytodaytoday	Sep 27todaytoday			#246.5%
GPQA DiamondAccuracytodaytoday	Sep 27todaytoday				#1593.1%
Coding2
WebDev ArenaArena ratingtodaytoday	Sep 27todaytoday		#81,656	#31,751best of the picked	#71,660
SWE-Bench ProResolvedtodaytoday	Sep 27todaytoday			#292.2%best of the picked	#488.2%
Agents and tools1
MCP AtlasPass ratetodaytoday	Sep 27todaytoday			#287.2%best of the picked	#882.3%
Vision2
Document ArenaArena ratingtodaytoday	Sep 27todaytoday		#121,471	#21,513best of the picked
Vision ArenaArena ratingtodaytoday	Sep 27todaytoday		#51,294best of the picked	#91,289
Speed1
AA SpeedOutput speedtodaytoday	Sep 27todaytoday		#2232 tok/sbest of the picked	#1569 tok/s	#2438 tok/s
Price1
AA PriceBlended pricetodaytoday	Sep 27todaytoday		#11$2.00best of the picked	#23$20.0	#21$6.00

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.