Compare / Claude Sonnet 4.5 vs grok-4-fast

Claude Sonnet 4.5 vs grok-4-fast

1 results from 1 sources that measured both models. Each row is in the source's own units; there is no overall winner.

Claude Sonnet 4.5
Anthropic · profile
grok-4-fast
xAI · profile
Results compared
1
Shared sources
1
BenchmarkMetricClaude Sonnet 4.5grok-4-fast
Arena (formerly LMArena)reportedOverallArena rating 1,1751,160

Bold green marks the better value on that metric. Where a source reports ranges that overlap, the difference may not be meaningful; see the benchmark page for ranges.