Artificial Analysis has released version 2.0 of its Coding Agent Index, which evaluates the performance of AI models across 290 software development tasks. Anthropic’s Claude Opus 5.5 ranks first with an overall score of 61.7 and dominates the FrontierCode benchmark. The update replaces DeepSWE with Cognition’s private FrontierCode v1.1 benchmark and revises the SWE-Atlas-QnA scoring criteria. Market reactions appear mixed, while upcoming announcements from Anthropic, Google and Meta, along with the end-of-month rankings, could affect market confidence.
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