Side-by-side benchmark comparison across knowledge, coding, math, and reasoning.
Claude 4.1 Opus is clearly ahead on the aggregate, 69 to 56. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Claude 4.1 Opus's sharpest advantage is in coding, where it averages 52 against 49.3. The single biggest benchmark swing on the page is MMLU, 76 to 86.9. o3-mini does hit back in knowledge, so the answer changes if that is the part of the workload you care about most.
o3-mini is the reasoning model in the pair, while Claude 4.1 Opus 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 Claude 4.1 Opus if you want the stronger benchmark profile. o3-mini only becomes the better choice if knowledge is the priority or you want the stronger reasoning-first profile.
Claude 4.1 Opus
64
o3-mini
82.1
Claude 4.1 Opus
52
o3-mini
49.3
Claude 4.1 Opus
75.8
o3-mini
87.3
Claude 4.1 Opus
83
o3-mini
93.9
Claude 4.1 Opus is ahead overall, 69 to 56. The biggest single separator in this matchup is MMLU, where the scores are 76 and 86.9.
o3-mini has the edge for knowledge tasks in this comparison, averaging 82.1 versus 64. Inside this category, MMLU is the benchmark that creates the most daylight between them.
Claude 4.1 Opus has the edge for coding in this comparison, averaging 52 versus 49.3. Inside this category, SWE-bench Verified is the benchmark that creates the most daylight between them.
o3-mini has the edge for math in this comparison, averaging 87.3 versus 75.8. Inside this category, AIME 2024 is the benchmark that creates the most daylight between them.
o3-mini has the edge for instruction following in this comparison, averaging 93.9 versus 83. Inside this category, IFEval is the benchmark that creates the most daylight between them.
Get notified when new models drop, benchmark scores change, or the leaderboard shifts. One email per week.
Free. No spam. Unsubscribe anytime. We only store derived location metadata for consent routing.