Side-by-side benchmark comparison across agentic, coding, multimodal, knowledge, reasoning, and math workflows.
GPT-5 mini is clearly ahead on the aggregate, 45 to 23. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
GPT-5 mini's sharpest advantage is in reasoning, where it averages 82.9 against 21.7. The single biggest benchmark swing on the page is SimpleQA, 84% to 21.7%.
GPT-5 mini is the reasoning model in the pair, while Grok 3 Mini is not. That usually helps on harder chain-of-thought-heavy tests, but it can also mean more latency and more token spend in real use.
Pick GPT-5 mini if you want the stronger benchmark profile. Grok 3 Mini only becomes the better choice if you would rather avoid the extra latency and token burn of a reasoning model.
Benchmark data for this category is coming soon.
GPT-5 mini
80
Grok 3 Mini
41.5
Benchmark data for this category is coming soon.
GPT-5 mini
82.9
Grok 3 Mini
21.7
GPT-5 mini
85
Grok 3 Mini
74.1
Benchmark data for this category is coming soon.
Benchmark data for this category is coming soon.
GPT-5 mini
89
Grok 3 Mini
39.7
GPT-5 mini is ahead overall, 45 to 23. The biggest single separator in this matchup is SimpleQA, where the scores are 84% and 21.7%.
GPT-5 mini has the edge for knowledge tasks in this comparison, averaging 85 versus 74.1. Inside this category, GPQA is the benchmark that creates the most daylight between them.
GPT-5 mini has the edge for coding in this comparison, averaging 80 versus 41.5. Grok 3 Mini stays close enough that the answer can still flip depending on your workload.
GPT-5 mini has the edge for math in this comparison, averaging 89 versus 39.7. Inside this category, AIME 2024 is the benchmark that creates the most daylight between them.
GPT-5 mini has the edge for reasoning in this comparison, averaging 82.9 versus 21.7. Inside this category, SimpleQA is the benchmark that creates the most daylight between them.
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