Side-by-side benchmark comparison across agentic, coding, multimodal, knowledge, reasoning, and math workflows.
o3-mini is clearly ahead on the aggregate, 28 to 23. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
o3-mini's sharpest advantage is in mathematics, where it averages 87.3 against 39.7. The single biggest benchmark swing on the page is AIME 2024, 39.7% to 87.3%.
o3-mini is also the more expensive model on tokens at $1.10 input / $4.40 output per 1M tokens, versus $0.30 input / $0.50 output per 1M tokens for Grok 3 Mini. That is roughly 8.8x on output cost alone. o3-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. o3-mini gives you the larger context window at 200K, compared with 128K for Grok 3 Mini.
Pick o3-mini if you want the stronger benchmark profile. Grok 3 Mini only becomes the better choice if you want the cheaper token bill or you would rather avoid the extra latency and token burn of a reasoning model.
Benchmark data for this category is coming soon.
Grok 3 Mini
41.5
o3-mini
49.3
Benchmark data for this category is coming soon.
Comparable scores for this category are coming soon. One or both models do not have sourced results here yet.
Grok 3 Mini
74.1
o3-mini
77.2
Comparable scores for this category are coming soon. One or both models do not have sourced results here yet.
Benchmark data for this category is coming soon.
Grok 3 Mini
39.7
o3-mini
87.3
o3-mini is ahead overall, 28 to 23. The biggest single separator in this matchup is AIME 2024, where the scores are 39.7% and 87.3%.
o3-mini has the edge for knowledge tasks in this comparison, averaging 77.2 versus 74.1. Inside this category, GPQA is the benchmark that creates the most daylight between them.
o3-mini has the edge for coding in this comparison, averaging 49.3 versus 41.5. Grok 3 Mini stays close enough that the answer can still flip depending on your workload.
o3-mini has the edge for math in this comparison, averaging 87.3 versus 39.7. Inside this category, AIME 2024 is the benchmark that creates the most daylight between them.
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