DeepSeek vs Anthropic

• DeepSeek
• Anthropic

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Head to head on 16 boards: Anthropic places best on 13 and DeepSeek places best on 3. Both ranked on 16 of 21 boards.

Board	Read	DeepSeek	Anthropic
Chat2
Text ArenaArena ratingtodaytoday	Nov 9todaytoday	#321,475DeepSeek V4.1 Flash	#41,505best of the pickedClaude Opus 5.5
MultiChallengeScoretodaytoday	Nov 9todaytoday	#574.9%best of the pickedDeepSeek V4P1 Flash	#1067.7%Claude Haiku 5.5
Reasoning7
LiveBenchGlobal averagetodaytoday	Nov 9todaytoday	#881.1%DeepSeek V4.1 Flash	#183.4%best of the pickedClaude Fable 5.1
AA IntelligenceIndextodaytoday	Nov 9todaytoday	#1632.6DeepSeek V4.1 Flash	#259.1best of the pickedClaude Opus 5.5
GPQA DiamondAccuracytodaytoday	Nov 9todaytoday	#2193.2%DeepSeek V4.1 Flash	#395.6%best of the pickedClaude Sonnet 5.5
Epoch ECIECItodaytoday	Nov 9todaytoday	#19159.3DeepSeek V4.1 Flash	#3168.4best of the pickedClaude Opus 5.5
ARC-AGI-2Scoretodaytoday	Nov 9todaytoday	#1978.1%DeepSeek V4.1 Flash	#393.3%best of the pickedClaude Opus 5.5
MMLU-ProAccuracy · staletodaytoday	Nov 9todaytoday	#3385.0%DeepSeek-V3.2	#489.1%best of the pickedClaude Opus 4.6
HLEAccuracytodaytoday	Nov 9todaytoday		#246.5%Claude Fable 5.1
Coding4
WebDev ArenaArena ratingtodaytoday	Nov 9todaytoday	#141,665DeepSeek V4.1 Flash	#11,814best of the pickedClaude Opus 5.5
SWE-bench VerifiedResolved · staletodaytoday	Nov 9todaytoday	#1170.0%DeepSeek-V3.2	#176.8%best of the pickedClaude Opus 4.5
Aider PolyglotPass rate · staletodaytoday	Nov 9todaytoday	#874.2%best of the pickedDeepSeek-V3.2	#1072.0%Claude Opus 4
SWE-Bench ProResolvedtodaytoday	Nov 9todaytoday		#198.0%Claude Opus 5
Agents and tools3
BFCLOverall accuracy · staletodaytoday	Nov 9todaytoday	#1256.7%DeepSeek-V3.2	#177.5%best of the pickedClaude Opus 4.5
MCP AtlasPass ratetodaytoday	Nov 9todaytoday		#387.2%Claude Fable 5.1
Search ArenaArena ratingtodaytoday	Nov 9todaytoday		#51,229Claude Fable 5
Vision2
Vision ArenaArena ratingtodaytoday	Nov 9todaytoday	#341,263DeepSeek V4.1 Flash	#11,309best of the pickedClaude Fable 5
Document ArenaArena ratingtodaytoday	Nov 9todaytoday		#11,499Claude Fable 5
Speed1
AA SpeedOutput speedtodaytoday	Nov 9todaytoday	#1323 tok/sDeepSeek V4 Pro 0813	#931 tok/sbest of the pickedClaude Sonnet 5.5
Price1
AA PriceBlended pricetodaytoday	Nov 9todaytoday	#3$0.53DeepSeek V4.1 Flash	#1$0.20best of the pickedClaude Haiku 5.5
Usage1
OpenRouterWeekly tokenstodaytoday	Nov 9todaytoday	#156.0T tokbest of the pickedDeepSeek V4.1 Flash	#66.8T tokClaude Opus 5.5

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.