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HEAD-TO-HEAD FRONTIER BENCHMARK DUEL · UPDATED NOVEMBER 4, 2026
Claude Opus 5.5 vs. Muse Spark Open / Llama 4.2
Quick Verdict: Route autonomous coding to Claude Opus 5.5 (84.2% SWE-bench Verified), hard scientific reasoning to Claude Opus 5.5 (94.1% GPQA Diamond), and high-volume cost-sensitive workloads to Muse Spark Open / Llama 4.2.
Claude Opus 5.5 (Anthropic)
94.6 pt
SWE: 84.2% · GPQA: 94.1% · $6.00/1M · Adopt NowMuse Spark Open / Llama 4.2 (Meta (Open))
86.4 pt
SWE: 74.8% · GPQA: 89.4% · $0.35/1M · Mid-Cycle (57%)