The updated index relies on private datasets for the first time, with 60% of scoring based on private test sets or held-out answers. Anthropic and OpenAI hold the top five models; Claude Opus 5.5 (max) leads at 58. The open weights gap widened from 3 to 12 points, with Kimi K3.1 Pro at 46 and released-weight leaders DeepSeek V4.1 Flash and GLM-5.3 at 32. Cost per task varies more than 13x among leading models, from $0.96 to $13.04. A new Progress Index v1 tracks capability over time on one scale.

AI summary of the linked source — not editorial content.

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Claude · a product of Anthropic · source

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Thread · 2 events · started 8 Oct 23:56 · last update 28 Oct 02:12
  1. Thread startArtificial Analysis announces Intelligence Index v5 for late October2 acc.
  2. UpdateArtificial Analysis launches Intelligence Index v5 and a new Progress Index13 acc.
  3. Leviathan published this article

All times UTC.

Cited posts

  • @lillian_ma_ Lillian MaFirst reportOn X ↗

    artificial analysis just dropped intelligence index v5 a few takeaways: less knowledge recall, more real-world execution. agentic coding and scientific reasoning take center stage. 60% private evals to curb benchmark gaming. eval infrastructure is becoming as important as the…

  • @ArtificialAnlys Artificial AnalysisOn X ↗

    Announcing Artificial Analysis Intelligence Index v5, featuring 2 new benchmarks and 3 upgrades. For the first time, the majority of the Index is built on private datasets The Artificial Analysis Intelligence Index is our composite measure of model capabilities across tasks…

  • @AGTPinsights AGTPOn X ↗

    Artificial Analysis just launched Intelligence Index v5, and Claude Opus 5.5 still tops it. Here's what you need to know. This is the next step after Cognition's FrontierCode 2.0 launch earlier today. That benchmark is now part of the index. Artificial Analysis calls v5 its… https://t.co/YuwwCK2HA5

Show 3 more cited posts
  • @kimmonismus Chubby♨️On X ↗

    Artificial Analysis’ Intelligence Index v5 now bases 60% of its score on evaluations with private test sets or held-out answers, with Claude Opus 5.5 narrowly leading GPT-6 Astra and GPT-6.1 Sol. As expected, GPT-6-Astra currently appears to be slightly ahead in scientific… https://t.co/rx05z9qibd

  • @AiBattle_ AiBattleOn X ↗

    The AA-Intelligence Index has been updated to V5 Rankings before: 1. Claude Opus 5.5 (Max) - 58 2. Claude Sonnet 5.5 (Max) - 56 3. Muse Wonder Full (Max)- 56 4. Kimi K3.1 Pro - 55 5. Claude Fable 5.1 (Max) - 53 Rankings now: 1. Claude Opus 5.5 (Max) - 58 2. GPT-6-Astra (Max)… https://t.co/UbUa9Srazn

  • @testingcatalog 🚨 AI News | TestingCatalogOn X ↗

    Artificial Analysis Intelligence Index v5 is now live! It includes 2 new benchmarks and 3 upgrades, and most of the Index is built on private datasets. New benchmarks include FrontierCode 2.0 from Cognition and Terminal-Bench-Science. Claude Opus 5.5 (max) leads at 58,… https://t.co/ti508Z4f4g

7 more accounts posted about this

TradersTrader calls tracked by Elfa · not advice

Positioning · ANTHROPIC

Open144 open positions · 103 long · 41 short

Tracked accounts lean long about 97% of the time, so a long-heavy book is normal, not a signal. As of 27 Oct 20:13 UTC.

Whole crypto market, not this story

Crowding5th percentile · vs last 28 days, 50 typical
Pulse 24h66/100 · unusualness of new calls, 0–100, 50 typical, higher means more long than usual
Book97.1% long · 10,723 accounts

As of 28 Oct 08:15 UTC.

Social-monitoring data, not investment advice Elfa prices Hyperliquid post text from Xas of

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