{"slug": "claude-opus-5-5-tops-artificial-analysis-revised-ai-index-with-58-points", "title": "Claude Opus 5.5 tops Artificial Analysis' revised AI index with 58 points", "summary": "Artificial Analysis released Intelligence Index v5 on October 27, placing 60% of the score on private test sets or held-out answers to make the leaderboard harder to game. The revision adds benchmarks for coding and terminal-based scientific work, changes the index's category weights, and introduces a second measure for tracking model capability over time. Claude Opus 5.5 tops the revised index with 58 points, and Artificial Analysis says buyers should treat v5 as a revised measurement system rather than a directly comparable continuation of earlier rankings.", "body_md": "# Claude Opus 5.5 tops Artificial Analysis' revised AI index with 58 points\n\n**The October 27th update adds coding and scientific-work benchmarks, puts 60% of the score on private or held-out answers, and introduces a separate capability trend index.**\n\n        By [Ryan Merket](https://runtimewire.com/author/ryan-merket)\n        · Published \n\nPrimary source: [x.com](https://x.com/ArtificialAnlys/status/2115265133467635877)\n\n## Why it matters\n\nArtificial Analysis is making contamination resistance a defining feature of its leaderboard while changing the tests and weights that determine scores. Buyers get a broader comparison that includes task costs, but should treat v5 as a revised measurement system, not a directly comparable continuation of earlier rankings.\n\nArtificial Analysis says 60% of its Intelligence Index v5 now rests on private test sets or held-out answers, as the model evaluator tries to make its leaderboard harder to game. The October 27th release also adds benchmarks for coding and terminal-based scientific work, changes the index's category weights, and introduces a second measure for tracking model capability over time. The company laid out the update in its [announcement article](https://artificialanalysis.ai/articles/artificial-analysis-intelligence-index-v5) and [X thread](https://x.com/ArtificialAnlys/status/2115265133467635877).…\n\nWhen you purchase through links in our articles, [we may earn a small commission](https://runtimewire.com/affiliate-monetization-standards). This doesn’t affect our editorial independence.", "url": "https://wpnews.pro/news/claude-opus-5-5-tops-artificial-analysis-revised-ai-index-with-58-points", "canonical_source": "https://runtimewire.com/article/claude-opus-5-5-tops-artificial-analysis-revised-ai-index-with-58-points", "published_at": "2026-10-28 13:23:10+00:00", "updated_at": "2026-10-28 16:45:00.555673+00:00", "lang": "en", "topics": ["artificial-intelligence", "large-language-models", "ai-research"], "entities": ["Artificial Analysis", "Claude Opus 5.5", "Intelligence Index v5"], "also_reported_by": [], "alternates": {"html": "https://wpnews.pro/news/claude-opus-5-5-tops-artificial-analysis-revised-ai-index-with-58-points", "markdown": "https://wpnews.pro/news/claude-opus-5-5-tops-artificial-analysis-revised-ai-index-with-58-points.md", "text": "https://wpnews.pro/news/claude-opus-5-5-tops-artificial-analysis-revised-ai-index-with-58-points.txt", "jsonld": "https://wpnews.pro/news/claude-opus-5-5-tops-artificial-analysis-revised-ai-index-with-58-points.jsonld"}}