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Artificial Analysis ·

Artificial Analysis' Intelligence Index: Sonnet 5.5 (max) ranks above GPT-6 Astra (max) and behind only Opus 5.5 (max) but has the highest token use of them all

With max effort, Sonnet 5.5 gains 18 points over Sonnet 5 and moves to #2 on the Intelligence Index, behind only Opus 5.5 (max).

In this story Artificial Analysis GPT-6 Astra Opus 5.5 Sonnet 5.5
Artificial Analysis' Intelligence Index: Sonnet 5.5 (max) ranks above GPT-6 Astra (max) and behind only Opus 5.5 (max) but has the highest token use of them all

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Artificial Analysis — Artificial Analysis' Intelligence Index: Sonnet 5.5 (max) ranks above GPT-6 Astra (max) and behind only Opus 5.5 (max) but has the highest token use of them all ↗

How this story grew

Coverage · 0 Discussion · 0
Sep 28Sep 30

Coverage

Anthropic: Anthropic releases Sonnet 5.5, saying it generates outputs 30%+ faster than Sonnet 5 and costs up to 30% less per task, and plans to release Haiku 5.5 soon

More

The New Stack: The New Stack
PCWorld: PCWorld
TestingCatalog AI News: TestingCatalog AI News
The Rundown AI: The Rundown AI
Cautious Optimism: Cautious Optimism
claude.dev Blog: claude.dev Blog
Claude: Claude
Moneycontrol: Moneycontrol
Bitcoin Insider: Bitcoin Insider
Help Net Security: Help Net Security
CNBC: CNBC
The Deep View: The Deep View
Reuters: Reuters
The Decoder: The Decoder
SiliconANGLE: SiliconANGLE
VentureBeat: VentureBeat

Discussion

@cameron.stream @peark.es
Hacker News r/ClaudeAI r/singularity r/accelerate
Mike Krieger
@artificialanlys @kimmonismus @synthwavedd @miaai_lab @rynorhn @claudeai @claudeai @levie @addyosmani @simonw @claudedevs @icesolst @anthropicai @kunchenguid @ericmaskfr @dani_avila7 @cursor_ai @trq212 @deryatr_ @astropol0 @mikeyk @tokengremlin @hesamation @mweinbach @bcherny @__alpoge__ @shub0414 @robertjbye @hesamation @kimmonismus @alexfinn @claudedevs @haider1 @matthewberman @kunchenguid @alexalbert__ @ash_twtz @claudeai @kimmonismus @claudeai @claudeai @claudeai @claudeai @synthwavedd

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@artificialanlys: Muse Spark 1.3 with max reasoning, in limited preview for partners, scores 62 on the Artificial Analysis Intelligence Index, behind only Fable 5.1 and Opus 5
xAI: SpaceXAI releases Grok 4.6, saying it matches GPT-5.6 Sol on the Artificial Analysis Intelligence Index, and prices it at $2/1M input and $6/1M output tokens
Ramp: Ramp's July AI index: Anthropic's market share hit 43.5%, widening its lead over OpenAI; Fable 5 is only 6% of tokens businesses bought, likely due to high cost
The Decoder: OpenAI prices GPT-6.1 Sol at $2/1M input and $10/1M output tokens, the same as GPT-6 Sol and Claude Sonnet 5.5, and says it performs well on safety tests
9to5Mac: OpenAI previews Ultrafast, an API tier powered by Cerebras that runs GPT-5.6 Sol up to 14× faster and generates up to 750 output tokens per second

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