Results released Wednesday placed Grok 4.5, running in its high-reasoning configuration, first for the combined score of quality and operational efficiency. BREAKING: Grok 4.5 just claimed the top spot on the new HighWalk Benchmark. Read more ChatGPT vs Gemini vs Grok vs Claude 2026: Who Leads the AI Race? ChatGPT vs Gemini vs Grok vs Claude 2026: Who Leads the AI Race? For now, Grok 4.5 holds the top combined ranking on this specific measure of technical-specification fidelity, underscoring progress in an area critical to reliable AI-assisted development.