Anthropic · capability answer
What does Claude do?
Long-context reasoning with a published safety policy.
The short answer
Claude is built by Anthropic and is positioned for writing, analysis, research and legal. Our readings score it strongest on long-form writing and multi-step reasoning.
Its weakest measured axis is response speed (68/100), 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
96
Coding
93
Writing
97
Analysis
95
Speed
68
Energy, carbon and water
Carbon footprint reads 66/100. The energy mix is mixed, and disclosure covers some but not all serving regions.
Water and local impact reads 62/100. Some sites use evaporative cooling in regions with moderate water stress.
Speed and efficiency also matter here: a 68/100 speed reading means longer runs per answer, which raises the energy cost of high-volume use.