Neura Intelligence Index

AI Model Benchmarks

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Claude Opus 5.5 vs Grok 4.6

Claude Opus 5.5

Anthropic 🇺🇸

99.9

#1—

X

xAI 🇺🇸

99.6

#2—

Category Comparison

Benchmark-by-Benchmark

coding

Benchmark	Claude Opus 5.5	Grok 4.6
SWE-Bench Pro	89.9	—

agent

Benchmark	Claude Opus 5.5	Grok 4.6
APEX Agents	—	57.5

Category Winners

coding

Claude Opus 5.5

99.9

agent

X

Grok 4.6

99.6

Claude Opus 5.5 vs Grok 4.6 — Benchmark Comparison | Neura Market