Verdict
o3-pro leads 3–1 across 4 shared benchmarks.
Grok 4 Fast 1 · o3-pro 3 · higher isn't always better — check the caveats below.
Reported scores — protocols may differ. How we compare
o3-pro leads 3–1 across 4 shared benchmarks. Grok 4 Fast leads 1 benchmark and o3-pro leads 3. Higher isn't always better — see the integrity caveats on each benchmark.
Grok 4 Fast and o3-pro have 4 benchmarks in common in our data — those are the only rows where a direct, apples-to-apples comparison is drawn.