Claude Sonnet 5.5 vs GPT-6 Astra vs Muse Spark vs Qwen3.8 Max (0902)

Head to head on 11 boards: GPT-6 Astra places best on 6, Claude Sonnet 5.5 places best on 2, Qwen3.8 Max (0902) places best on 2 and Muse Spark places best on 1. All 4 ranked on 4 of 16 boards.

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Claude Sonnet 5.5GPT-6 AstraMuse SparkQwen3.8 Max (0902)

Board	Read	Claude Sonnet 5.5	GPT-6 Astra	Muse Spark	Qwen3.8 Max (0902)
Chat2
Text ArenaArena ratingtodaytoday	Oct 5todaytoday	#391,471	#261,477	#121,489best of the picked	#201,482
MultiChallengeScoretodaytoday	Oct 5todaytoday			#175.5%
Reasoning6
GPQA DiamondAccuracytodaytoday	Oct 5todaytoday	#295.6%	#195.8%best of the picked	#4189.8%	#2192.7%
Epoch ECIECItodaytoday	Oct 5todaytoday	#3165.2	#2166.5best of the picked	#40152.1	#20156.6
AA IntelligenceIndextodaytoday	Oct 5todaytoday	#256.0best of the picked	#452.7		#1045.4
LiveBenchGlobal averagetodaytoday	Oct 5todaytoday	#2077.8%	#482.2%best of the picked		#1578.5%
HLEAccuracytodaytoday	Oct 5todaytoday		#154.8%best of the picked	#640.6%
ARC-AGI-2Scoretodaytoday	Oct 5todaytoday		#195.0%
Coding2
WebDev ArenaArena ratingtodaytoday	Oct 5todaytoday	#31,786	#21,788best of the picked		#91,671
SWE-Bench ProResolvedtodaytoday	Oct 5todaytoday		#390.2%
Agents and tools1
MCP AtlasPass ratetodaytoday	Oct 5todaytoday			#982.2%
Vision2
Vision ArenaArena ratingtodaytoday	Oct 5todaytoday	#291,268	#181,284	#61,294	#21,301best of the picked
Document ArenaArena ratingtodaytoday	Oct 5todaytoday		#131,468best of the picked	#241,444
Speed1
AA SpeedOutput speedtodaytoday	Oct 5todaytoday	#5139 tok/sbest of the picked	#1954 tok/s		#2439 tok/s
Price1
AA PriceBlended pricetodaytoday	Oct 5todaytoday	#17$4.00	#24$20.0		#14$3.00best of the picked
Usage1
OpenRouterWeekly tokenstodaytoday	Oct 5todaytoday		#171.4T 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.