# Anthropic’s Claude Opus 5.5 tops AI index with 61.7 score > Source: > Published: 2026-10-23 00:19:46+00:00 Artificial Analysis has released its Coding Agent Index v2.0, showcasing the performance of AI models across 290 software tasks. The update highlights [Anthropic](https://cryptobriefing.com/markets/anthropic/)’s Claude Opus 5.5 as the leader, scoring 61.7 overall and dominating the FrontierCode benchmark. This development follows the replacement of DeepSWE with [Cognition](https://cryptobriefing.com/markets/cognition/)’s private benchmark, FrontierCode v1.1, and revisions to the SWE-Atlas-QnA grading criteria. The updated index evaluates performance on real-world code mergeability, providing a comprehensive assessment of modern AI capabilities. ## Key Takeaways - The announcement suggests that Anthropic’s Claude Opus 5.5 is currently leading in AI model rankings according to the new index. - Markets appear to reflect mixed reactions, as the source’s social media origin reduces perceived impact strength. - Pricing suggests a decrease in confidence for Anthropic maintaining its top position by the end of October 2026. ## What to Watch Observers will be monitoring further announcements from Anthropic and competitors, such as [Google](https://cryptobriefing.com/markets/alphabet/) and [Meta](https://cryptobriefing.com/markets/meta/), which could influence market confidence. Key indicators would include any new benchmark results or model releases from these companies. The upcoming end-of-month rankings could significantly impact current market pricing, especially if other models surpass Claude Opus 5.5 in performance.