Claude Opus 4 scores 20.0 on the Respan Index (#96), ahead of Grok Build 0.1 at 19.0 (#98). Claude Opus 4 leads on 1 of the 1 benchmarks both report. Grok Build 0.1 is 24x cheaper per token at list price. Grok Build 0.1 has the larger context window (256K tokens).
Higher is better. Each score links to where it was published.
* Estimated: no published scores in that category. How the Respan Index works