xAI · capability answer
What does Grok do?
Fast, unfiltered, realtime-leaning.
The short answer
Grok is built by xAI and is positioned for chat, research and code. Our readings score it strongest on multi-step reasoning and response speed.
Its weakest measured axis is long-form writing (82/100), so plan around that when the work depends on it. Access is paid, and the weights are closed, so you can only reach it through the vendor's own service.
Reasoning
90
Coding
88
Writing
82
Analysis
85
Speed
90
Energy, carbon and water
Carbon footprint reads 22/100. Serving leans on carbon-heavy grid power, or the vendor discloses too little to judge.
Water and local impact reads 18/100. Cooling draws meaningful water in drought-exposed regions, or usage is not reported.
Speed and efficiency also matter here: a 90/100 speed reading means fewer compute-seconds per answer for routine work.