Compare / Claude Opus 4.5 vs grok-4-1-fast
Claude Opus 4.5 vs grok-4-1-fast
3 results from 2 sources that measured both models. Each row is in the source's own units; there is no overall winner.
| Benchmark | Metric | Claude Opus 4.5 | grok-4-1-fast |
|---|---|---|---|
| Arena (formerly LMArena)reported | OverallArena rating | 1,187 | 1,194 |
| tau2-benchreported | Consistency (pass^4)% of tasks | 11.3% | 5.2% |
| tau2-benchreported | Task success (pass^1)% of tasks | 24.7% | 13.1% |
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.