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SlopCodeBench 10/2026: Astra beats Opus 5.5 in coding agent test

Original: SlopCodeBench 10/2026 – Opus 5.5, Astra wins overall, xhigh considered harmful

HumanLayer's SlopCodeBench results for October 2026 rank Anthropic's Claude Opus 5.5 and a model called Astra on coding agent benchmarks, with Astra taking the top spot overall. The writeup also argues that 'xhigh' reasoning-effort settings are counterproductive, calling the mode harmful for coding tasks.

Why now: New benchmark results comparing frontier coding models are contentious and closely watched by developers.

HumanLayerSlopCodeBenchClaude Opus 5.5AstraAnthropic

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Evidence

• SlopCodeBench 10/2026 – Opus 5.5, Astra wins overall, xhigh considered harmful · dhorthy · 306

API: https://socialmediatrends-api.osmike.com/v1/trends/3021289