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GPT-5.6 Luna vs Muse Spark 1.1

One row per board where at least one is ranked, from each board's current capture.

Head to head on 6 boards: Muse Spark 1.1 places best on 5 and GPT-5.6 Luna places best on 1. Both ranked on 6 of 11 boards.

BoardGPT-5.6 LunaMuse Spark 1.1
Chat2
Text ArenaArena ratingtoday#631,453#131,490best of the picked
MultiChallengeScoretoday#475.3%
Reasoning4
Epoch ECIECItoday#30156.8best of the picked#42154.9
LiveBenchGlobal averagetoday#4273.6%#3575.3%best of the picked
GPQA DiamondAccuracytoday#3091.6%
ARC-AGI-2Scoretoday#3759.6%
Coding1
WebDev ArenaArena ratingtoday#521,519#441,542best of the picked
Agents and tools1
MCP AtlasPass ratetoday#288.1%
Vision2
Document ArenaArena ratingtoday#211,460#91,479best of the picked
Vision ArenaArena ratingtoday#411,256#241,279best of the picked
Usage1
OpenRouterWeekly tokenstoday#172.7T 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.

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