Otterai vs OpenAI vs Anthropic vs Microsoft

Head to head on 25 boards: Anthropic places best on 13, OpenAI places best on 11, Otterai places best on 1 and Microsoft places best on 1 (a tie counts for each). All 4 ranked on 0 of 27 boards.

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OOtteraiOpenAIAnthropicMicrosoft

Board	Read	OOtterai	OpenAI	Anthropic	Microsoft
Chat2
MultiChallengeScoretodaytoday	Oct 21todaytoday		#182.0%best of the pickedGPT-6.1 Sol	#667.7%Claude Haiku 5.5
Text ArenaArena ratingtodaytoday	Oct 21todaytoday		#171,485GPT-5.6 Sol	#21,507best of the pickedClaude Opus 5.5
Reasoning7
MMLU-ProAccuracy · staletodaytoday	Oct 21todaytoday		#389.3%best of the pickedo1	#489.1%Claude Opus 4.6	#7576.0%Phi 4 Plus
AA IntelligenceIndextodaytoday	Oct 21todaytoday		#453.0GPT-6 Astra	#158.0best of the pickedClaude Opus 5.5
HLEAccuracytodaytoday	Oct 21todaytoday		#154.8%best of the pickedGPT-6 Astra	#246.5%Claude Fable 5.1
Epoch ECIECItodaytoday	Oct 21todaytoday		#2168.8GPT-6 Astra	#1168.8best of the pickedClaude Opus 5.5
ARC-AGI-2Scoretodaytoday	Oct 21todaytoday		#195.0%best of the pickedGPT-6 Astra	#393.3%Claude Opus 5.5
LiveBenchGlobal averagetodaytoday	Oct 21todaytoday		#482.2%GPT-6 Astra	#183.4%best of the pickedClaude Fable 5.1
GPQA DiamondAccuracytodaytoday	Oct 21todaytoday		#295.8%best of the pickedGPT-6 Astra	#395.6%Claude Sonnet 5.5
Coding4
WebDev ArenaArena ratingtodaytoday	Oct 21todaytoday		#21,788GPT-6 Astra	#11,814best of the pickedClaude Opus 5.5
SWE-Bench ProResolvedtodaytoday	Oct 21todaytoday		#490.2%GPT-6 Astra	#198.0%best of the pickedClaude Opus 5
SWE-bench VerifiedResolved · staletodaytoday	Oct 21todaytoday		#672.8%GPT-5.2	#176.8%best of the pickedClaude Opus 4.5
Aider PolyglotPass rate · staletodaytoday	Oct 21todaytoday		#188.0%best of the pickedGPT-5	#1072.0%Claude Opus 4
Agents and tools3
BFCLOverall accuracy · staletodaytoday	Oct 21todaytoday		#763.0%o3	#177.5%best of the pickedClaude Opus 4.5	#5028.8%Phi 4
Search ArenaArena ratingtodaytoday	Oct 21todaytoday		#11,257best of the pickedGPT-5.6 Sol	#21,253Claude Opus 4.6
MCP AtlasPass ratetodaytoday	Oct 21todaytoday		#1181.8%GPT-5.6	#287.2%best of the pickedClaude Fable 5.1
Vision2
Vision ArenaArena ratingtodaytoday	Oct 21todaytoday		#61,294GPT-6.1 Sol	#11,308best of the pickedClaude Fable 5
Document ArenaArena ratingtodaytoday	Oct 21todaytoday		#61,486GPT-5.5	#11,516best of the pickedClaude Opus 5
Image2
Text-to-ImageArena ratingtodaytoday	Oct 21todaytoday		#11,425best of the pickedGPT Image 2.5 Sunburst		#51,332MAI Image 2.6
Image EditArena ratingtodaytoday	Oct 21todaytoday		#11,524best of the pickedGPT Image 2.5 Sunburst		#51,428MAI Image 2.6
Video1
Text-to-VideoArena ratingtodaytoday	Oct 21todaytoday		#111,368Sora 2 Pro
Speech2
Open ASRAverage WERtodaytoday	Oct 21todaytoday	#13.88 WERbest of the pickedspeech-v3.1 (OtterAI)	#306.38 WERgpt-transcribe (openai)		#44.26 WERazure-speech-06-2026 (microsoft)
Speech ArenaArena ratingtodaytoday	Oct 21todaytoday		#391,103TTS 1 Hd		#291,141best of the pickedAzure Hd 2.5
Embeddings1
MTEBMean task scoretodaytoday	Oct 21todaytoday				#174.3%harrier-oss-v1-27b (microsoft)
Speed1
AA SpeedOutput speedtodaytoday	Oct 21todaytoday		#9266 tok/sbest of the pickedGPT OSS 20b	#12236 tok/sClaude Haiku 5.5	#7545 tok/sPhi 4 Mini
Price1
AA PriceBlended pricetodaytoday	Oct 21todaytoday		#3$0.20best of the pickedGPT-6 Luna	#3$0.20best of the pickedClaude Haiku 5.5
Usage1
OpenRouterWeekly tokenstodaytoday	Oct 21todaytoday		#66.2T tokGPT-6 Luna	#56.8T tokbest of the pickedClaude 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.