GPT-5.5 vs Muse Spark 1.1

• GPT-5.5
• Muse Spark 1.1

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Head to head on 7 boards: GPT-5.5 places best on 4 and Muse Spark 1.1 places best on 3. Both ranked on 7 of 11 boards.

Board	Read	GPT-5.5	Muse Spark 1.1
Chat2
Text ArenaArena ratingtodaytoday	Nov 9todaytoday	#251,481	#131,490best of the picked
MultiChallengeScoretodaytoday	Nov 9todaytoday		#475.3%
Reasoning4
LiveBenchGlobal averagetodaytoday	Nov 9todaytoday	#1080.2%best of the picked	#3575.3%
Epoch ECIECItodaytoday	Nov 9todaytoday	#17160.0best of the picked	#42154.9
ARC-AGI-2Scoretodaytoday	Nov 9todaytoday	#1185.0%
GPQA DiamondAccuracytodaytoday	Nov 9todaytoday	#3890.7%
Coding1
WebDev ArenaArena ratingtodaytoday	Nov 9todaytoday	#541,513	#441,542best of the picked
Agents and tools2
MCP AtlasPass ratetodaytoday	Nov 9todaytoday	#2275.3%	#288.1%best of the picked
Search ArenaArena ratingtodaytoday	Nov 9todaytoday	#81,227
Vision2
Document ArenaArena ratingtodaytoday	Nov 9todaytoday	#81,482best of the picked	#91,479
Vision ArenaArena ratingtodaytoday	Nov 9todaytoday	#181,285best of the picked	#241,279

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.